A search for heavy, right-handed neutrinos, [Formula: see text] ([Formula: see text]), and right-handed [Formula: see text] bosons, which arise in the left-right symmetric extensions of the standard model, has been performed by the CMS experiment. The search was based on a sample of two lepton plus two jet events collected in proton-proton collisions at a center-of-mass energy of 8[Formula: see text] corresponding to an integrated luminosity of 19.7 [Formula: see text]. For models with strict left-right symmetry, and assuming only one [Formula: see text] flavor contributes significantly to the [Formula: see text] decay width, the region in the two-dimensional [Formula: see text] mass plane excluded at a 95 % confidence level extends to approximately [Formula: see text] and covers a large range of neutrino masses below the [Formula: see text] boson mass, depending on the value of [Formula: see text]. This search significantly extends the [Formula: see text] exclusion region beyond previous results.
A search for heavy, right-handed neutrinos, [Formula: see text] ([Formula: see text]), and right-handed [Formula: see text] bosons, which arise in the left-right symmetric extensions of the standard model, has been performed by the CMS experiment. The search was based on a sample of two lepton plus two jet events collected in proton-proton collisions at a center-of-mass energy of 8[Formula: see text] corresponding to an integrated luminosity of 19.7 [Formula: see text]. For models with strict left-right symmetry, and assuming only one [Formula: see text] flavor contributes significantly to the [Formula: see text] decay width, the region in the two-dimensional [Formula: see text] mass plane excluded at a 95 % confidence level extends to approximately [Formula: see text] and covers a large range of neutrino masses below the [Formula: see text] boson mass, depending on the value of [Formula: see text]. This search significantly extends the [Formula: see text] exclusion region beyond previous results.
The standard model (SM) [1-3] explicitly incorporates the parity violation observed in weak interactions through the use of a left-handed chiral gauge group which includes the left-handed gauge bosons and . One of the attractive features of left-right (LR) symmetric extensions [4-7] to the standard model is that these models explain parity violation in the SM as the consequence of spontaneous symmetry breaking of a larger gauge group to at a multi-TeV mass scale. The LR extensions introduce an additional right-handed symmetry group to the SM, which includes heavy charged () and neutral () gauge bosons that could be produced at LHC energies.In addition to addressing parity non-conservation in weak interactions, LR theories also provide an explanation for the mass of SM neutrinos. The observation of neutrino oscillations [8, 9] requires that neutrinos have mass, and the fact that the neutrino mass scale [10] is far below that of quarks and charged leptons suggests that the origin of neutrino mass may be distinct from the origin of mass for the other SM fermions. Heavy right-handed Majorana neutrinos (, , and ), which are naturally present in LR models, provide a possible explanation for the mass of SM neutrinos through the see-saw mechanism [11, 12].We search for bosons produced in a sample of proton–proton collisions at a center-of-mass energy
and collected by the CMS detector at the CERN LHC. This search, which expands upon a previous search using
data [13], assumes the production of a boson that decays to a charged lepton (we consider ) and to a right-handed neutrino . The decay of the right-handed neutrino produces a second charged lepton of the same flavor together with a virtual right-handed charged boson . When the decays to a pair of quarks, we arrive at the decay chain:The quarks hadronize into jets (), resulting in an observable final state containing two same-flavor charged leptons and two jets. Although the potential Majorana nature of the right-handed neutrinos implies the final-state charged leptons can have the same sign, we do not impose any charge requirements on the final-state electrons or muons in this analysis.This search is characterized by the masses of the boson () and the right-handed neutrino (), which are allowed to vary independently. Although is allowed in the LR symmetric model, it is not considered in this analysis in favor of the dominant production mechanism. As the branching fraction for depends on the number of heavy-neutrino flavors accessible at LHC energies, results are first interpreted assuming that only one neutrino flavor, namely or , is light enough to contribute significantly to the boson decay width. Results are then interpreted assuming degenerate , , and masses.For given boson and mass assumptions, the signal cross section can be predicted from the value of the coupling constant , which denotes the strength of the gauge interactions of bosons. We assume strict LR symmetry, such that is equal to the (left-handed) weak interaction coupling strength at , and we also assume identical quark and neutrino mixing matrices for the left- and right-handed interactions. The boson production cross section can then be calculated by the fewz program [14] using the left-handed model [15]. Finally, the left-right boson and lepton mixing angles are assumed to be small [16].The theoretical lower limit on mass of
[17, 18] is estimated from the measured size of the mass difference. Searches for decays at the LHC using and 8 data [19-21] have excluded boson masses below 2.05 at 95 % confidence level (CL), and previous searches for at the LHC excluded at 95 % CL a region in the two-dimensional parameter space extending to nearly
[13, 22]. This paper describes the first direct search that is sensitive to values beyond the theoretical lower mass limit.
The CMS detector
The central feature of the CMS apparatus is a superconducting solenoid, of 6 m internal diameter, providing a field of 3.8 T. Within the field volume are the silicon pixel and strip tracker, the PbWO crystal electromagnetic calorimeter (ECAL) and the brass and scintillator hadron calorimeter (HCAL). Muons are measured in gas-ionization detectors embedded in the steel flux-return yoke. The ECAL has an energy resolution of better than 0.5 % for unconverted photons with transverse energies
. The muons are measured in the pseudorapidity window , where and is the polar angle with respect to the counterclockwise-beam direction. The muon system detection planes are made of three technologies: drift tubes, cathode strip chambers, and resistive-plate chambers. Matching the muons to the tracks measured in the silicon tracker results in a transverse momentum () resolution between 1 and 10 % for
. The inner tracker measures charged particles within the range and provides an impact parameter resolution of 15 m and a resolution of about 1.5 % for 100 particles. The first level of the CMS trigger system, composed of custom hardware processors, uses information from the calorimeters and muon detectors to select up to 100 kHz of events of interest. The high-level trigger (HLT) processor farm uses information from all CMS subdetectors to further decrease the event rate to about 400 Hz before data storage. A more detailed description of the CMS detector, together with a definition of the coordinate system used and the relevant kinematic variables, can be found elsewhere [23].The particle-flow event reconstruction technique [24, 25] used to reconstruct jets in this analysis consists in reconstructing and identifying each single particle with an optimized combination of all subdetector information. The energy of photons is directly obtained from the ECAL measurement, corrected for zero-suppression effects. The energy of electrons is determined from a combination of the track momentum at the main interaction vertex, the corresponding ECAL cluster energy, and the energy sum of all bremsstrahlung photons attached to the track. The energy of muons is obtained from the corresponding track momentum. The energy of charged hadrons is determined from a combination of the track momentum and the corresponding ECAL and HCAL energy, corrected for zero-suppression effects and for the response function of the calorimeters to hadronic showers. Finally, the energy of neutral hadrons is obtained from the corresponding corrected ECAL and HCAL energy.
Data and Monte Carlo samples
The search for boson production described in this paper is performed using pp collision data collected with the CMS detector at
in 2012. The data sample corresponds to an integrated luminosity of 19.7 . Candidate events are collected using a double-electron trigger that requires two clusters in ECAL with
each. These ECAL clusters are loosely matched at the HLT stage to tracks formed from hits in the pixel detector. To reject hadronic backgrounds, only a small amount of energy in the HCAL may be associated with the HLT electron candidates. Muon channel events are selected with a single-muon trigger that requires at least one candidate muon with
and , as reconstructed by the HLT.Simulated signal samples are generated assuming using pythia 6.4.26 [26], a tree-level Monte Carlo (MC) generator, with CTEQ6L1 parton distribution functions (PDF) [27] and underlying event tune Z2* [28]. The MC generator includes the LR symmetric model with the assumptions previously mentioned. The final state leptons and jets in these signal events are sufficiently energetic to allow reconstruction effects to be addressed apart from the kinematic requirements discussed below. With this separation, the extension from to the full two-dimensional mass plane for signal events is straight-forward, as is discussed in Sect. 7. The dominant backgrounds to boson production include SM processes with at least two charged leptons with large transverse momentum, namely and Drell–Yan (DY)+jets processes. All remaining SM background events, which collectively contribute less than 10 % to the total background level, are dominated by diboson and single top quark processes. The background is estimated using control samples in data and a simulated sample of fully leptonic decays, which are generated using the tree-level matrix element MC generator MadGraph 5.1.4.8 [29]. The DY+jets background is estimated using exclusive DY+n jets (, 1, 2, 3, 4) simulated samples generated with MadGraph 5.1.3.30. For the above MadGraph samples, parton showering, fragmentation, and the underlying event are handled by pythia. A statistically comparable sample of DY+jets events generated with the tree-level MC event generator sherpa 1.4.2 [30], which incorporates parton showering and other effects in addition to the hard process, is used to help quantify the systematic uncertainty in the DY+jets background estimation. Simulated diboson (, Z, and ZZ) events are generated using pythia 6.4.26, with the additional small contributions from diboson scattering processes generated with MadGraph 5.1.3.30. The simulated single top quark (namely, tW) background sample is generated via the next-to-leading-order MC generator powheg 1.0 [31-34]. Parton showering and other effects are handled by pythia for the diboson and single top quark background samples.The generated signal and SM background events pass through a full CMS detector simulation based on Geant4 [35], and are reconstructed with the same software used to reconstruct collision data, unless otherwise noted. The simulation is compared to data using various control samples, and when necessary the simulation is adjusted to account for slight deviations seen with respect to data. Additional pp collisions in the same beam crossing (pileup) are also included for each simulated event to realistically describe the
collision environment.
Event selection and object reconstruction
We assemble boson candidates from the two highest- (leading) jets and two highest- same-flavor leptons (electrons or muons) reconstructed in collision data or simulation events. Candidate events are first selected by the CMS trigger system using the lepton triggers described previously. The electron and muon trigger efficiencies are determined using the “tag and probe” techniques applied to candidates [36-38]. Simple triggers, requiring a single ECAL cluster with
, collected events with high- electrons to help evaluate the trigger efficiency for electron channel events with high dielectron mass [39]. Following the application of object and event selection requirements mentioned below, the trigger efficiency for candidate events is greater than 99 % (98 %) in the electron (muon) channel.Because of the large expected mass of the boson, electron and muon reconstruction and identification are performed using algorithms optimized for objects with large transverse momentum [36, 39]. Non-isolated muon backgrounds are suppressed by computing the transverse momentum sum of all additional tracks within a cone of about the muon direction, where (azimuthal angle in radians), and requiring the sum to be less than 10 % of the muon transverse momentum. This isolation requirement is only weakly dependent on the number of pileup collisions in the event, as tracks with a large separation from the muon, i.e., tracks from other collisions, are not included in the isolation sum. Electrons are expected to have minimal associated HCAL energy and also to appear isolated in both calorimeters and in the tracker. To minimize the effects of pileup, electrons must be associated with the primary vertex, which is the collision vertex with the highest of all associated tracks. As pileup collisions also produce extra energy in the calorimeters and can make the electron appear non-isolated, calorimeter isolation for electron candidates is corrected for the average energy density in the event [40].The total numbers of events reconstructed in data, and the expected contributions from signal and background samples, after successive stages of the selection requirements are applied. For the first selection stage, all kinematic and identification requirements are imposed on the leptons and jets as described in the text. The “Signal” column indicates the expected contribution for
, with
. The “Other” column represents the combined background contribution from diboson and single top quark processes. The uncertainties in the background expectation are derived for the final stage of selection and more details are given in Sect. 6. The total experimental uncertainty is summarized in the first signal uncertainty, and the second signal uncertainty represents the PDF cross section uncertainty. The yields from earlier stages of the selection have greater relative uncertainty than that for the final
selection stageJets are reconstructed using the anti- clustering algorithm [41] with a distance parameter of 0.5. Charged and neutral hadrons, photons, and leptons reconstructed with the CMS particle-flow technique are used as input to the jet clustering algorithm. To reduce the contribution to jet energy from pileup collisions, charged hadrons that do not originate from the primary vertex in the event are not used in jet clustering. After jet clustering, the pileup calorimeter energy contribution from neutral particles is removed by applying a residual average area-based correction [40, 42]. Jet identification requirements [43] suppress jets from calorimeter noise and beam halo, and the event is rejected if either of the two highest- jet candidates fails the identification criteria. The jet four-momenta are corrected for zero-suppression effects and for the response function of the calorimeters to hadronic showers based on studies with simulation and data [44]. As the electrons and muons from boson decay are likely to be spatially separated from jets in the detector, we reject any lepton found within a cone of radius from the jet axis for either of the two leading jets.After selecting jets and isolated electrons or muons in the event, candidates are formed using the two leading same-flavor leptons and the two leading jets that satisfy the selection criteria. The leading (subleading) lepton is required to have
, while the of each jet candidate must exceed 40. Electrons and jets are reconstructed within the tracker acceptance (). Muon acceptance extends to , although at least one muon is restricted to in order to be selected by the trigger.We perform a shape-based analysis, searching for evidence of boson production using the four-object mass distribution (), where we consider events with
. To reduce the contribution from DY+jets and other SM backgrounds, we also impose a requirement of
on the mass of the lepton pair associated with the boson candidate.The decay of a boson tends to produce final-state objects that have high and are separated in the detector. We define the signal acceptance to include the kinematic and detector acceptance requirements for the leptons and jets, lepton-jet separation, and the minimum and requirements. This signal acceptance, typically near 80 % at , varies by less than 1 % between the electron and muon channels because of differences in detector acceptance for leptons. Provided that the boson decay satisfies acceptance requirements, the ability to reconstruct all four final-state particles is near 75 % 2.8 (85 %) for the electron (muon) channel, with some dependence on boson and masses. However, if the mass of the boson is sufficiently heavy compared to that of the right-handed neutrino, the decay products tend to overlap and it becomes difficult to reconstruct two distinct jets or find leptons outside of the jet cone. As a result, the signal acceptance as a function of decreases rapidly as drops below about 10 % of the boson mass.
Standard model backgrounds
The background contribution to the and final states is estimated using a control sample of events reconstructed in data. Studies of simulated , , and decays confirm that the and distributions can be modeled by the distribution, so we apply selection requirements to events that parallel those applied to electron and muon channel events. The events are collected using the same HLT selection as events, although in this case only one muon is available for selection by the trigger. This sample is dominated by events, and small contributions from other SM processes are subtracted using simulation. The relative fractions of , , and events that pass the selection criteria are determined from simulation. Using this information, the distribution for the control sample from data is scaled to match the expected background contribution to the and distributions. The scale factor derived from simulation is determined after requiring
and
, which is equivalent to the third and final selection stage in Table 1. The scale factors for the background sample are and in the electron and muon channels, respectively, where the uncertainty in the values reflects the number of simulated events that satisfy all object and event requirements. The trigger efficiency for events is over 90 % for events with central muons () and decreases for events with more forward muons. Consequently, both the electron and muon scale factors are larger than the expected value of 0.5, given the relative branching fractions for , , and decays.
Table 1
The total numbers of events reconstructed in data, and the expected contributions from signal and background samples, after successive stages of the selection requirements are applied. For the first selection stage, all kinematic and identification requirements are imposed on the leptons and jets as described in the text. The “Signal” column indicates the expected contribution for
, with
. The “Other” column represents the combined background contribution from diboson and single top quark processes. The uncertainties in the background expectation are derived for the final stage of selection and more details are given in Sect. 6. The total experimental uncertainty is summarized in the first signal uncertainty, and the second signal uncertainty represents the PDF cross section uncertainty. The yields from earlier stages of the selection have greater relative uncertainty than that for the final
selection stage
The scale factors, determined from simulation, are checked using control regions in data. We first consider events in both simulation and data where one or both jets are identified as originating from a bottom quark. After all selection requirements are applied, reconstructed decays dominate the event samples. Accounting for contributions from other SM processes using simulation, we compute scale factors for events in data with
to estimate the contribution to the SM background when one or both jets are tagged as b jets using the medium working point of the combined secondary vertex tagging algorithm [45]. The and distributions in b-tagged data agree with expectations based on simulation and the control sample, and the derived scale factors agree with those obtained from simulation within statistical precision. For another cross-check, we compute the scale factor based on the expectation that should be twice the rate of or . Deviation from this expected ratio depends primarily on the differences in electron and muon reconstruction and identification efficiencies. The number of electron and muon channel events in data in the control region are thus used to derive the relative efficiency difference between electrons and muons and then extract the scale factors. The scale factors determined from this control region in data are consistent with those derived from simulation, and the larger statistical uncertainty (2 %) of this cross-check is taken as the systematic uncertainty in the normalization.The DY+jets background contribution is estimated from decays reconstructed in simulation and data. The simulated DY+jets background contribution is normalized to data using events in the dilepton mass region after kinematic requirements are applied on the leptons and jets, which is the first selection stage indicated in Table 1. After removing the small contribution from other SM background processes, the simulated DY+jets distributions are normalized to data using scale factors of and for the electron and muon channels, respectively, relative to inclusive next-to-next-to-leading-order cross section calculations. The uncertainty in this value reflects the number of events from data with . The shape of the distribution in data is in agreement with SM expectations for
, as shown in Fig. 1.
Fig. 1
Distribution of the invariant mass (top) and (bottom) for events in data (points with error bars) with
for the leading (subleading) lepton and at least two jets with
, and for background contributions (hatched stacked histograms) from data control samples () and simulation. The numbers of events from each SM process are included in parentheses in the legend, where the contributions from diboson and single top quark processes have been collected in the “Other” background category
Distribution of the invariant mass (top) and (bottom) for events in data (points with error bars) with
for the leading (subleading) lepton and at least two jets with
, and for background contributions (hatched stacked histograms) from data control samples () and simulation. The numbers of events from each SM process are included in parentheses in the legend, where the contributions from diboson and single top quark processes have been collected in the “Other” background categoryThe diboson and single top quark contributions to the total background are estimated from simulation, based on next-to-leading-order [46] and approximate next-to-next-to-leading-order [47] production cross sections, respectively. The background from +jets processes, also estimated from simulation, is negligible starting from the earliest selection stage. Finally, the background contribution from multijet processes is estimated using control samples in data and is also found to be negligible at every selection stage.The observed and expected numbers of events surviving the selections are summarized in Table 1, which explicitly lists the contributions from and DY+jets processes while including all other SM background contributions in a single column. The yields reflect the numbers of background events surviving each selection stage, with normalization factors obtained from simulation and control sample studies or taken directly from simulation. The numbers of events observed at each selection stage agree with SM expectations in both channels.
The distribution and systematic uncertainties
Once all object and event selection criteria are applied, the distributions in data and simulation are used to search for evidence of boson production, where the expected SM distribution is computed as the sum of the individual background distributions. The distribution is measured in 200 wide bins up to 1.8, as this bin width is comparable to the mass resolution of the boson for
. Beyond 1.8, events are summed in two bins,
and
, to account for the small number of background events in the simulated and data control samples at high mass. The distributions for DY+jets, diboson, and single top quark processes are taken from simulation, with the normalization of each distribution as discussed previously. The distribution from data is used to model the background contribution in the electron and muon channels.Distribution of the invariant mass (top) and (bottom) for events in data (points with error bars) with
and for background contributions (hatched stacked histograms) from data control samples () and simulation. The signal mass point
,
, is included for comparison (open red histogram, and also as a dotted line for the unbinned signal shape). The numbers of events from each background process (and the expected number of signal events) are included in parentheses in the legend, where the contributions from diboson and single top quark processes have been collected in the “Other” background category. The data are compared with SM expectations in the lower portion of the figure. The total background uncertainty (light red band) and the background uncertainty after neglecting the uncertainty due to background modeling (dark blue band) are included as a function of for
(dashed line)In our previous search for production using 7 collision data [13], we modeled the shape of each background distribution using an exponential lineshape. For this search, we again find that an exponential function can be used to describe each background distribution below 2, but these distributions begin to deviate from the assumed exponential shape at high mass. As a result, in this updated search we use the distributions from each background process directly instead of relying on exponential fits to model the shape of the SM backgrounds.As the background shape is taken from a control sample of events in data, we examine the shape of the background distributions in both simulation and data. Based on the method to extract the background shape in our earlier search, we fit each distribution to an exponential lineshape for events surviving all selection criteria for events. The background distribution is again expected to decrease exponentially as increases, although we allow for deviations at high mass (beyond 2) where the DY+jets background is more significant. The simulated distribution agrees with the exponential lineshape for
, as expected, while we find that the distribution in the data control sample noticeably deviates from fit expectations for . While the fit expects 94 events, only 78 events are found in data in this region. As a result, we correct the distribution from the data control sample to the expected number of events from the exponential fit for , and this correction is reflected in Table 1. The size of the correction is taken as a systematic uncertainty in the shape of the
distribution.The distributions for events satisfying all selection criteria appear in Fig. 2. A comparison of the observed data to SM expectations yields a normalized of 1.4 (0.9) for electron (muon) channel events. We observe an excess in the electron channel in the region , where 14 events are observed compared to 4 events expected from SM backgrounds. This excess has a local significance of 2.8 estimated using the method discussed in Sect. 7. This excess does not appear to be consistent with decay. We examined additional distributions for events with , including the mass distributions (for both the leading and subleading electrons), , and , as well as the distributions for each of the final state particles. In this examination, we find no compelling evidence in favor of the signal hypothesis over the assumption of an excess of SM background events in this region. Examining the charge of the electrons used to build boson candidates in data events with , we find same-sign electrons in one of the 14 reconstructed events. In this region, the same-sign SM background is expected to be on the order of half an event due to SM diboson processes and charge misidentification in DY+jets events. No same-sign events are observed in the same mass region of the distribution for the muon channel. For comparison, making plausible assumptions for the properties of a signal contributing in this region, one would expect half of the additional events to have electrons with the same sign.
Fig. 2
Distribution of the invariant mass (top) and (bottom) for events in data (points with error bars) with
and for background contributions (hatched stacked histograms) from data control samples () and simulation. The signal mass point
,
, is included for comparison (open red histogram, and also as a dotted line for the unbinned signal shape). The numbers of events from each background process (and the expected number of signal events) are included in parentheses in the legend, where the contributions from diboson and single top quark processes have been collected in the “Other” background category. The data are compared with SM expectations in the lower portion of the figure. The total background uncertainty (light red band) and the background uncertainty after neglecting the uncertainty due to background modeling (dark blue band) are included as a function of for
(dashed line)
The uncertainties in modeling the shape of the background distributions dominate the background systematic uncertainty, as shown in Fig. 2. The background uncertainty is determined in each mass bin based on the number of events surviving all selection criteria for each background sample. For the two dominant backgrounds, an additional shape uncertainty is included as part of the background shape uncertainty.The additional shape uncertainty is included for the
mass region based on the previously discussed correction to the distribution for
. No additional shape uncertainty is applied at other values as the distributions in both data and simulation agree with the assumed exponential lineshape below 1.8, and the statistical uncertainty of the control sample dominates at high mass. For the DY+jets background, the shape uncertainty is determined using simulated samples from two different MC generators, MadGraph and sherpa. The difference between these two distributions, computed as a function of mass, is taken as an additional systematic uncertainty in the DY+jets shape.The uncertainty associated with the background normalization is taken as the quadratic sum of the uncertainty in the scale factors determined from the cross-check for background performed on a control region in data, the uncertainty estimated from the difference in the values obtained for DY+jets scale factors in the electron and muon channels, and the combined cross section and luminosity uncertainties for the remaining backgrounds. This overall background normalization uncertainty is small compared to the uncertainties determined for the background shape.Lepton reconstruction and identification uncertainties, which also contribute to the total signal and background systematic uncertainty, are determined using events reconstructed in both data and simulation. Uncertainties in the jet and lepton energy scales and resolutions also contribute to the systematic uncertainty. These uncertainties dominate the signal efficiency uncertainty, resulting in a total systematic uncertainty of up to 10 % for the signal efficiency, depending on the boson mass assumption. The combination of lepton and jet energy scale, resolution, and efficiency uncertainties is less than 5 % for the background estimates taken from simulation.The systematic uncertainties related to pileup, uncertainties in the proton PDFs, and initial- or final-state radiation are computed for the simulated background samples and are found to be small when compared to the background shape uncertainty. Additional theoretical uncertainties for the SM background processes are covered by the shape uncertainty. The total uncertainty for signal and background is determined for the final selection stage and presented in Table 1. Figure 2 summarizes the background uncertainty as a function of and displays the dominant background shape uncertainty relative to the total background uncertainty.
Limits on boson production
We estimate limits on boson production using a multibin limit setting technique [48-50]. The distributions obtained from signal MC, each of the SM backgrounds, and the observed data all serve as limit inputs. The systematic uncertainties mentioned previously are included as nuisance parameters in the limit calculations. We estimate the 95 % CL upper limit on the boson cross section multiplied by the branching fraction as a function of and . These results [available in tabular form in the supplemental material] can be used for the evaluation of models other than those considered in this paper.The limits are computed for a set of boson and mass assumptions, where starts at 1 and increases in 100 steps and the mass is taken to be half the boson mass. For these determinations, the boson signal samples include the full CMS detector simulation.The procedure to determine the limits on boson production for a range of mass assumptions () proceeds as follows. For a fixed value of , the limits on are determined as a function of (up to ) based on differences in kinematic acceptance, lepton-jet overlap, and shape relative to . As mentioned previously, the combined reconstruction and identification efficiency for the boson and decay products varies by as a function of once acceptance requirements are satisfied. Consequently, for values other than , the boson production cross section limits are computed using information from signal samples that do not include the simulated detector response.The cross section limit calculation based on the kinematic acceptance is compared with the results for fully simulated samples using a spectrum of mass assumptions for , 1.5, 2, and 3. The difference between the two methods is at the percent level or smaller for masses greater than 10–20 % of the generated boson mass. Differences grow to % for lighter right-handed neutrinos. The ratio of the products of efficiency and acceptance for the two approaches is computed as a function of , and a global fit to this distribution is used to correct the cross section limits determined as a function of for all values.The uncertainty in this correction is computed using the maximum difference in the efficiency times acceptance ratio for the set of simulated samples as a function of , unless the statistical uncertainty in the ratio calculation dominates. The impact of this uncertainty on signal acceptance is propagated to the cross section limit calculations. The overall effect on the limits from this uncertainty is negligible for most values, but can degrade the cross section limit by 5–10 % for masses below 10 % of .Finally, we account for variations in the shape of the distribution. As , neutrino production via a virtual boson becomes more significant. As a result, the shape of the signal distribution is expected to vary as a function of both and . This effect is included in the limit calculations.The largest uncertainty related to the production estimation arises from the variation in the predicted signal production cross section as a result of the uncertainties in the proton PDFs, where we use the CTEQ6L1 PDF set for signal events. The cross section uncertainty, which is not considered in the limit calculations, ranges from 5 % for
to 26 % for
and is computed following the PDF4LHC prescriptions [51, 52] for the CT10 [53], MSTW2008 [54], and NNPDF2.1 [55] PDF sets. The PDF uncertainties in the signal acceptance, which are small compared to the systematic uncertainties for signal events mentioned previously, are included in the limit calculations.For the results presented in Fig. 3, we indicate a range of masses that are excluded as a function of assuming that only one heavy neutrino flavor (electron or muon) is accessible from 8 pp collisions, with the other (, with ) too heavy to be produced. These limits are obtained by comparing the observed and expected cross section upper limits with the expected cross section for each mass point. The limits extend to roughly
in each channel and exclude a wide range of heavy neutrino masses for boson mass assumptions below this maximal value. The inclusion of the results from the previous iteration of this analysis [13], which searched for boson production in the final state using 7 data, does not significantly affect the limit results. The excess in the electron channel at approximately 2 has a local significance of 2.8 for a boson candidate with a mass of 2.1. Assuming contributions from SM backgrounds only, the p value for the local excess in the distribution is 0.0050. We also present limits as a function of boson mass for a right-handed neutrino with in Fig. 4. For the electron (muon) channel, we exclude bosons with
, with an expected exclusion of 2.99 (3.04).
Fig. 3
The 95 % CL exclusion region (hatched) in the plane, assuming the model described in the text (see Sect. 1), for the electron (top) and muon (bottom) channels. Neutrino masses greater than (yellow shaded region) are not considered in this search
Fig. 4
The 95 % CL exclusion for boson production cross section times branching fraction, computed as a function of assuming the right-handed neutrino has half the mass of the boson, for the electron (top) and muon (bottom) channels. The signal cross section PDF uncertainties (red band surrounding the theoretical -boson production cross section curve) are included for illustration purposes only
The 95 % CL exclusion region (hatched) in the plane, assuming the model described in the text (see Sect. 1), for the electron (top) and muon (bottom) channels. Neutrino masses greater than (yellow shaded region) are not considered in this searchThe 95 % CL exclusion for boson production cross section times branching fraction, computed as a function of assuming the right-handed neutrino has half the mass of the boson, for the electron (top) and muon (bottom) channels. The signal cross section PDF uncertainties (red band surrounding the theoretical -boson production cross section curve) are included for illustration purposes onlyWe additionally consider the case where all masses are degenerate and can be produced via boson production and decay in 8 pp collisions. In this case, the electron and muon results can be combined as shown in Fig. 5. The exclusion for the combination extends slightly further than the single-channel exclusion limits, with an observed (expected) exclusion for the combined channel of
for .
Fig. 5
The 95 % CL exclusion region in the plane (top), and as a function of boson mass with (bottom) obtained combining the electron and muon channels. The signal cross section PDF uncertainties (red band surrounding the theoretical -boson production cross section curve) are included for illustration purposes only. Neutrino masses greater than (yellow shaded region in the top figure) are not considered in this search
The 95 % CL exclusion region in the plane (top), and as a function of boson mass with (bottom) obtained combining the electron and muon channels. The signal cross section PDF uncertainties (red band surrounding the theoretical -boson production cross section curve) are included for illustration purposes only. Neutrino masses greater than (yellow shaded region in the top figure) are not considered in this search
Summary
A search for right-handed bosons () and heavy right-handed neutrinos () in the left-right symmetric extension of the standard model has been presented. The data sample is in agreement with expectations from standard model processes in the final state. An excess is observed in the electron channel with a local significance of 2.8 at
. The excess does not appear to be consistent with expectations from left-right symmetric theory. Considering and searches separately, regions in the mass space are excluded at 95 % confidence level that extend up to
for both channels. Assuming with degenerate mass for , boson production is excluded at 95 % confidence level up to
. This search has significantly extended the exclusion region in the two-dimensional mass plane compared to previous searches, and for the first time this search has excluded values beyond the theoretical lower mass limit of
.Below is the link to the electronic supplementary material.Supplementary material 1 (pdf 220 KB)
Authors: G Aad; B Abbott; J Abdallah; S Abdel Khalek; A A Abdelalim; A Abdesselam; O Abdinov; B Abi; M Abolins; O S Abouzeid; H Abramowicz; H Abreu; E Acerbi; B S Acharya; L Adamczyk; D L Adams; T N Addy; J Adelman; M Aderholz; S Adomeit; P Adragna; T Adye; S Aefsky; J A Aguilar-Saavedra; M Aharrouche; S P Ahlen; F Ahles; A Ahmad; M Ahsan; G Aielli; T Akdogan; T P A Akesson; G Akimoto; A V Akimov; A Akiyama; M S Alam; M A Alam; J Albert; S Albrand; M Aleksa; I N Aleksandrov; F Alessandria; C Alexa; G Alexander; G Alexandre; T Alexopoulos; M Alhroob; M Aliev; G Alimonti; J Alison; M Aliyev; B M M Allbrooke; P P Allport; S E Allwood-Spiers; J Almond; A Aloisio; R Alon; A Alonso; B Alvarez Gonzalez; M G Alviggi; K Amako; P Amaral; C Amelung; V V Ammosov; A Amorim; G Amorós; N Amram; C Anastopoulos; L S Ancu; N Andari; T Andeen; C F Anders; G Anders; K J Anderson; A Andreazza; V Andrei; M-L Andrieux; X S Anduaga; A Angerami; F Anghinolfi; A Anisenkov; N Anjos; A Annovi; A Antonaki; M Antonelli; A Antonov; J Antos; F Anulli; S Aoun; L Aperio Bella; R Apolle; G Arabidze; I Aracena; Y Arai; A T H Arce; S Arfaoui; J-F Arguin; E Arik; M Arik; A J Armbruster; O Arnaez; V Arnal; C Arnault; A Artamonov; G Artoni; D Arutinov; S Asai; R Asfandiyarov; S Ask; B Asman; L Asquith; K Assamagan; A Astbury; B Aubert; E Auge; K Augsten; M Aurousseau; G Avolio; R Avramidou; D Axen; C Ay; G Azuelos; Y Azuma; M A Baak; G Baccaglioni; C Bacci; A M Bach; H Bachacou; K Bachas; M Backes; M Backhaus; E Badescu; P Bagnaia; S Bahinipati; Y Bai; D C Bailey; T Bain; J T Baines; O K Baker; M D Baker; S Baker; E Banas; P Banerjee; Sw Banerjee; D Banfi; A Bangert; V Bansal; H S Bansil; L Barak; S P Baranov; A Barashkou; A Barbaro Galtieri; T Barber; E L Barberio; D Barberis; M Barbero; D Y Bardin; T Barillari; M Barisonzi; T Barklow; N Barlow; B M Barnett; R M Barnett; A Baroncelli; G Barone; A J Barr; F Barreiro; J Barreiro Guimarães da Costa; P Barrillon; R Bartoldus; A E Barton; V Bartsch; R L Bates; L Batkova; J R Batley; A Battaglia; M Battistin; F Bauer; H S Bawa; S Beale; T Beau; P H Beauchemin; R Beccherle; P Bechtle; H P Beck; S Becker; M Beckingham; K H Becks; A J Beddall; A Beddall; S Bedikian; V A Bednyakov; C P Bee; M Begel; S Behar Harpaz; P K Behera; M Beimforde; C Belanger-Champagne; P J Bell; W H Bell; G Bella; L Bellagamba; F Bellina; M Bellomo; A Belloni; O Beloborodova; K Belotskiy; O Beltramello; O Benary; D Benchekroun; M Bendel; K Bendtz; N Benekos; Y Benhammou; E Benhar Noccioli; J A Benitez Garcia; D P Benjamin; M Benoit; J R Bensinger; K Benslama; S Bentvelsen; D Berge; E Bergeaas Kuutmann; N Berger; F Berghaus; E Berglund; J Beringer; P Bernat; R Bernhard; C Bernius; T Berry; C Bertella; A Bertin; F Bertinelli; F Bertolucci; M I Besana; N Besson; S Bethke; W Bhimji; R M Bianchi; M Bianco; O Biebel; S P Bieniek; K Bierwagen; J Biesiada; M Biglietti; H Bilokon; M Bindi; S Binet; A Bingul; C Bini; C Biscarat; U Bitenc; K M Black; R E Blair; J-B Blanchard; G Blanchot; T Blazek; C Blocker; J Blocki; A Blondel; W Blum; U Blumenschein; G J Bobbink; V B Bobrovnikov; S S Bocchetta; A Bocci; C R Boddy; M Boehler; J Boek; N Boelaert; J A Bogaerts; A Bogdanchikov; A Bogouch; C Bohm; J Bohm; V Boisvert; T Bold; V Boldea; N M Bolnet; M Bomben; M Bona; V G Bondarenko; M Bondioli; M Boonekamp; C N Booth; S Bordoni; C Borer; A Borisov; G Borissov; I Borjanovic; M Borri; S Borroni; V Bortolotto; K Bos; D Boscherini; M Bosman; H Boterenbrood; D Botterill; J Bouchami; J Boudreau; E V Bouhova-Thacker; D Boumediene; C Bourdarios; N Bousson; A Boveia; J Boyd; I R Boyko; N I Bozhko; I Bozovic-Jelisavcic; J Bracinik; A Braem; P Branchini; G W Brandenburg; A Brandt; G Brandt; O Brandt; U Bratzler; B Brau; J E Brau; H M Braun; B Brelier; J Bremer; K Brendlinger; R Brenner; S Bressler; D Britton; F M Brochu; I Brock; R Brock; T J Brodbeck; E Brodet; F Broggi; C Bromberg; J Bronner; G Brooijmans; W K Brooks; G Brown; H Brown; P A Bruckman de Renstrom; D Bruncko; R Bruneliere; S Brunet; A Bruni; G Bruni; M Bruschi; T Buanes; Q Buat; F Bucci; J Buchanan; P Buchholz; R M Buckingham; A G Buckley; S I Buda; I A Budagov; B Budick; V Büscher; L Bugge; O Bulekov; A C Bundock; M Bunse; T Buran; H Burckhart; S Burdin; T Burgess; S Burke; E Busato; P Bussey; C P Buszello; F Butin; B Butler; J M Butler; C M Buttar; J M Butterworth; W Buttinger; S Cabrera Urbán; D Caforio; O Cakir; P Calafiura; G Calderini; P Calfayan; R Calkins; L P Caloba; R Caloi; D Calvet; S Calvet; R Camacho Toro; P Camarri; M Cambiaghi; D Cameron; L M Caminada; S Campana; M Campanelli; V Canale; F Canelli; A Canepa; J Cantero; L Capasso; M D M Capeans Garrido; I Caprini; M Caprini; D Capriotti; M Capua; R Caputo; R Cardarelli; T Carli; G Carlino; L Carminati; B Caron; S Caron; E Carquin; G D Carrillo Montoya; A A Carter; J R Carter; J Carvalho; D Casadei; M P Casado; M Cascella; C Caso; A M Castaneda Hernandez; E Castaneda-Miranda; V Castillo Gimenez; N F Castro; G Cataldi; P Catastini; A Catinaccio; J R Catmore; A Cattai; G Cattani; S Caughron; D Cauz; P Cavalleri; D Cavalli; M Cavalli-Sforza; V Cavasinni; F Ceradini; A S Cerqueira; A Cerri; L Cerrito; F Cerutti; S A Cetin; F Cevenini; A Chafaq; D Chakraborty; I Chalupkova; K Chan; B Chapleau; J D Chapman; J W Chapman; E Chareyre; D G Charlton; V Chavda; C A Chavez Barajas; S Cheatham; S Chekanov; S V Chekulaev; G A Chelkov; M A Chelstowska; C Chen; H Chen; S Chen; T Chen; X Chen; S Cheng; A Cheplakov; V F Chepurnov; R Cherkaoui El Moursli; V Chernyatin; E Cheu; S L Cheung; L Chevalier; G Chiefari; L Chikovani; J T Childers; A Chilingarov; G Chiodini; A S Chisholm; R T Chislett; M V Chizhov; G Choudalakis; S Chouridou; I A Christidi; A Christov; D Chromek-Burckhart; M L Chu; J Chudoba; G Ciapetti; A K Ciftci; R Ciftci; D Cinca; V Cindro; C Ciocca; A Ciocio; M Cirilli; M Citterio; M Ciubancan; A Clark; P J Clark; W Cleland; J C Clemens; B Clement; C Clement; Y Coadou; M Cobal; A Coccaro; J Cochran; P Coe; J G Cogan; J Coggeshall; E Cogneras; J Colas; A P Colijn; N J Collins; C Collins-Tooth; J Collot; G Colon; P Conde Muiño; E Coniavitis; M C Conidi; M Consonni; S M Consonni; V Consorti; S Constantinescu; C Conta; G Conti; F Conventi; J Cook; M Cooke; B D Cooper; A M Cooper-Sarkar; K Copic; T Cornelissen; M Corradi; F Corriveau; A Cortes-Gonzalez; G Cortiana; G Costa; M J Costa; D Costanzo; T Costin; D Côté; L Courneyea; G Cowan; C Cowden; B E Cox; K Cranmer; F Crescioli; M Cristinziani; G Crosetti; R Crupi; S Crépé-Renaudin; C-M Cuciuc; C Cuenca Almenar; T Cuhadar Donszelmann; M Curatolo; C J Curtis; C Cuthbert; P Cwetanski; H Czirr; P Czodrowski; Z Czyczula; S D'Auria; M D'Onofrio; A D'Orazio; P V M Da Silva; C Da Via; W Dabrowski; A Dafinca; T Dai; C Dallapiccola; M Dam; M Dameri; D S Damiani; H O Danielsson; D Dannheim; V Dao; G Darbo; G L Darlea; W Davey; T Davidek; N Davidson; R Davidson; E Davies; M Davies; A R Davison; Y Davygora; E Dawe; I Dawson; J W Dawson; R K Daya-Ishmukhametova; K De; R de Asmundis; S De Castro; P E De Castro Faria Salgado; S De Cecco; J de Graat; N De Groot; P de Jong; C De La Taille; H De la Torre; F De Lorenzi; B De Lotto; L de Mora; L De Nooij; D De Pedis; A De Salvo; U De Sanctis; A De Santo; J B De Vivie De Regie; G De Zorzi; S Dean; W J Dearnaley; R Debbe; C Debenedetti; B Dechenaux; D V Dedovich; J Degenhardt; C Del Papa; J Del Peso; T Del Prete; T Delemontex; M Deliyergiyev; A Dell'Acqua; L Dell'Asta; M Della Pietra; D della Volpe; M Delmastro; N Delruelle; P A Delsart; C Deluca; S Demers; M Demichev; B Demirkoz; J Deng; S P Denisov; D Derendarz; J E Derkaoui; F Derue; P Dervan; K Desch; E Devetak; P O Deviveiros; A Dewhurst; B DeWilde; S Dhaliwal; R Dhullipudi; A Di Ciaccio; L Di Ciaccio; A Di Girolamo; B Di Girolamo; S Di Luise; A Di Mattia; B Di Micco; R Di Nardo; A Di Simone; R Di Sipio; M A Diaz; F Diblen; E B Diehl; J Dietrich; T A Dietzsch; S Diglio; K Dindar Yagci; J Dingfelder; C Dionisi; P Dita; S Dita; F Dittus; F Djama; T Djobava; M A B do Vale; A Do Valle Wemans; T K O Doan; M Dobbs; R Dobinson; D Dobos; E Dobson; J Dodd; C Doglioni; T Doherty; Y Doi; J Dolejsi; I Dolenc; Z Dolezal; B A Dolgoshein; T Dohmae; M Donadelli; M Donega; J Donini; J Dopke; A Doria; A Dos Anjos; M Dosil; A Dotti; M T Dova; A D Doxiadis; A T Doyle; Z Drasal; N Dressnandt; C Driouichi; M Dris; J Dubbert; S Dube; E Duchovni; G Duckeck; A Dudarev; F Dudziak; M Dührssen; I P Duerdoth; L Duflot; M-A Dufour; M Dunford; H Duran Yildiz; R Duxfield; M Dwuznik; F Dydak; M Düren; W L Ebenstein; J Ebke; S Eckweiler; K Edmonds; C A Edwards; N C Edwards; W Ehrenfeld; T Ehrich; T Eifert; G Eigen; K Einsweiler; E Eisenhandler; T Ekelof; M El Kacimi; M Ellert; S Elles; F Ellinghaus; K Ellis; N Ellis; J Elmsheuser; M Elsing; D Emeliyanov; R Engelmann; A Engl; B Epp; A Eppig; J Erdmann; A Ereditato; D Eriksson; J Ernst; M Ernst; J Ernwein; D Errede; S Errede; E Ertel; M Escalier; C Escobar; X Espinal Curull; B Esposito; F Etienne; A I Etienvre; E Etzion; D Evangelakou; H Evans; L Fabbri; C Fabre; R M Fakhrutdinov; S Falciano; Y Fang; M Fanti; A Farbin; A Farilla; J Farley; T Farooque; S Farrell; S M Farrington; P Farthouat; P Fassnacht; D Fassouliotis; B Fatholahzadeh; A Favareto; L Fayard; S Fazio; R Febbraro; P Federic; O L Fedin; W Fedorko; M Fehling-Kaschek; L Feligioni; D Fellmann; C Feng; E J Feng; A B Fenyuk; J Ferencei; J Ferland; W Fernando; S Ferrag; J Ferrando; V Ferrara; A Ferrari; P Ferrari; R Ferrari; D E Ferreira de Lima; A Ferrer; M L Ferrer; D Ferrere; C Ferretti; A Ferretto Parodi; M Fiascaris; F Fiedler; A Filipčič; A Filippas; F Filthaut; M Fincke-Keeler; M C N Fiolhais; L Fiorini; A Firan; G Fischer; M J Fisher; M Flechl; I Fleck; J Fleckner; P Fleischmann; S Fleischmann; T Flick; A Floderus; L R Flores Castillo; M J Flowerdew; M Fokitis; T Fonseca Martin; D A Forbush; A Formica; A Forti; D Fortin; J M Foster; D Fournier; A Foussat; A J Fowler; K Fowler; H Fox; P Francavilla; S Franchino; D Francis; T Frank; M Franklin; S Franz; M Fraternali; S Fratina; S T French; C Friedrich; F Friedrich; R Froeschl; D Froidevaux; J A Frost; C Fukunaga; E Fullana Torregrosa; B G Fulsom; J Fuster; C Gabaldon; O Gabizon; T Gadfort; S Gadomski; G Gagliardi; P Gagnon; C Galea; E J Gallas; V Gallo; B J Gallop; P Gallus; K K Gan; Y S Gao; V A Gapienko; A Gaponenko; F Garberson; M Garcia-Sciveres; C García; J E García Navarro; R W Gardner; N Garelli; H Garitaonandia; V Garonne; J Garvey; C Gatti; G Gaudio; B Gaur; L Gauthier; P Gauzzi; I L Gavrilenko; C Gay; G Gaycken; J-C Gayde; E N Gazis; P Ge; Z Gecse; C N P Gee; D A A Geerts; Ch Geich-Gimbel; K Gellerstedt; C Gemme; A Gemmell; M H Genest; S Gentile; M George; S George; P Gerlach; A Gershon; C Geweniger; H Ghazlane; N Ghodbane; B Giacobbe; S Giagu; V Giakoumopoulou; V Giangiobbe; F Gianotti; B Gibbard; A Gibson; S M Gibson; L M Gilbert; V Gilewsky; D Gillberg; A R Gillman; D M Gingrich; J Ginzburg; N Giokaris; M P Giordani; R Giordano; F M Giorgi; P Giovannini; P F Giraud; D Giugni; M Giunta; P Giusti; B K Gjelsten; L K Gladilin; C Glasman; J Glatzer; A Glazov; K W Glitza; G L Glonti; J R Goddard; J Godfrey; J Godlewski; M Goebel; T Göpfert; C Goeringer; C Gössling; T Göttfert; S Goldfarb; T Golling; A Gomes; L S Gomez Fajardo; R Gonçalo; J Goncalves Pinto Firmino Da Costa; L Gonella; A Gonidec; S Gonzalez; S González de la Hoz; G Gonzalez Parra; M L Gonzalez Silva; S Gonzalez-Sevilla; J J Goodson; L Goossens; P A Gorbounov; H A Gordon; I Gorelov; G Gorfine; B Gorini; E Gorini; A Gorišek; E Gornicki; V N Goryachev; B Gosdzik; A T Goshaw; M Gosselink; M I Gostkin; I Gough Eschrich; M Gouighri; D Goujdami; M P Goulette; A G Goussiou; C Goy; S Gozpinar; I Grabowska-Bold; P Grafström; K-J Grahn; F Grancagnolo; S Grancagnolo; V Grassi; V Gratchev; N Grau; H M Gray; J A Gray; E Graziani; O G Grebenyuk; T Greenshaw; Z D Greenwood; K Gregersen; I M Gregor; P Grenier; J Griffiths; N Grigalashvili; A A Grillo; S Grinstein; Y V Grishkevich; J-F Grivaz; E Gross; J Grosse-Knetter; J Groth-Jensen; K Grybel; V J Guarino; D Guest; C Guicheney; A Guida; S Guindon; H Guler; J Gunther; B Guo; J Guo; A Gupta; Y Gusakov; V N Gushchin; P Gutierrez; N Guttman; O Gutzwiller; C Guyot; C Gwenlan; C B Gwilliam; A Haas; S Haas; C Haber; H K Hadavand; D R Hadley; P Haefner; F Hahn; S Haider; Z Hajduk; H Hakobyan; D Hall; J Haller; K Hamacher; P Hamal; M Hamer; A Hamilton; S Hamilton; H Han; L Han; K Hanagaki; K Hanawa; M Hance; C Handel; P Hanke; J R Hansen; J B Hansen; J D Hansen; P H Hansen; P Hansson; K Hara; G A Hare; T Harenberg; S Harkusha; D Harper; R D Harrington; O M Harris; K Harrison; J Hartert; F Hartjes; T Haruyama; A Harvey; S Hasegawa; Y Hasegawa; S Hassani; M Hatch; D Hauff; S Haug; M Hauschild; R Hauser; M Havranek; C M Hawkes; R J Hawkings; A D Hawkins; D Hawkins; T Hayakawa; T Hayashi; D Hayden; H S Hayward; S J Haywood; E Hazen; M He; S J Head; V Hedberg; L Heelan; S Heim; B Heinemann; S Heisterkamp; L Helary; C Heller; M Heller; S Hellman; D Hellmich; C Helsens; R C W Henderson; M Henke; A Henrichs; A M Henriques Correia; S Henrot-Versille; F Henry-Couannier; C Hensel; T Henß; C M Hernandez; Y Hernández Jiménez; R Herrberg; G Herten; R Hertenberger; L Hervas; G G Hesketh; N P Hessey; E Higón-Rodriguez; D Hill; J C Hill; N Hill; K H Hiller; S Hillert; S J Hillier; I Hinchliffe; E Hines; M Hirose; F Hirsch; D Hirschbuehl; J Hobbs; N Hod; M C Hodgkinson; P Hodgson; A Hoecker; M R Hoeferkamp; J Hoffman; D Hoffmann; M Hohlfeld; M Holder; S O Holmgren; T Holy; J L Holzbauer; Y Homma; T M Hong; L Hooft van Huysduynen; T Horazdovsky; C Horn; S Horner; J-Y Hostachy; S Hou; M A Houlden; A Hoummada; J Howarth; D F Howell; I Hristova; J Hrivnac; I Hruska; T Hryn'ova; P J Hsu; S-C Hsu; G S Huang; Z Hubacek; F Hubaut; F Huegging; A Huettmann; T B Huffman; E W Hughes; G Hughes; R E Hughes-Jones; M Huhtinen; P Hurst; M Hurwitz; U Husemann; N Huseynov; J Huston; J Huth; G Iacobucci; G Iakovidis; M Ibbotson; I Ibragimov; L Iconomidou-Fayard; J Idarraga; P Iengo; O Igonkina; Y Ikegami; M Ikeno; D Iliadis; N Ilic; M Imori; T Ince; J Inigo-Golfin; P Ioannou; M Iodice; K Iordanidou; V Ippolito; A Irles Quiles; C Isaksson; A Ishikawa; M Ishino; R Ishmukhametov; C Issever; S Istin; A V Ivashin; W Iwanski; H Iwasaki; J M Izen; V Izzo; B Jackson; J N Jackson; P Jackson; M R Jaekel; V Jain; K Jakobs; S Jakobsen; J Jakubek; D K Jana; E Jansen; H Jansen; A Jantsch; M Janus; G Jarlskog; L Jeanty; K Jelen; I Jen-La Plante; P Jenni; A Jeremie; P Jež; S Jézéquel; M K Jha; H Ji; W Ji; J Jia; Y Jiang; M Jimenez Belenguer; G Jin; S Jin; O Jinnouchi; M D Joergensen; D Joffe; L G Johansen; M Johansen; K E Johansson; P Johansson; S Johnert; K A Johns; K Jon-And; G Jones; R W L Jones; T W Jones; T J Jones; O Jonsson; C Joram; P M Jorge; J Joseph; K D Joshi; J Jovicevic; T Jovin; X Ju; C A Jung; R M Jungst; V Juranek; P Jussel; A Juste Rozas; V V Kabachenko; S Kabana; M Kaci; A Kaczmarska; P Kadlecik; M Kado; H Kagan; M Kagan; S Kaiser; E Kajomovitz; S Kalinin; L V Kalinovskaya; S Kama; N Kanaya; M Kaneda; S Kaneti; T Kanno; V A Kantserov; J Kanzaki; B Kaplan; A Kapliy; J Kaplon; D Kar; M Karagounis; M Karagoz; M Karnevskiy; V Kartvelishvili; A N Karyukhin; L Kashif; G Kasieczka; R D Kass; A Kastanas; M Kataoka; Y Kataoka; E Katsoufis; J Katzy; V Kaushik; K Kawagoe; T Kawamoto; G Kawamura; M S Kayl; V A Kazanin; M Y Kazarinov; R Keeler; R Kehoe; M Keil; G D Kekelidze; J S Keller; J Kennedy; M Kenyon; O Kepka; N Kerschen; B P Kerševan; S Kersten; K Kessoku; J Keung; F Khalil-zada; H Khandanyan; A Khanov; D Kharchenko; A Khodinov; A G Kholodenko; A Khomich; T J Khoo; G Khoriauli; A Khoroshilov; N Khovanskiy; V Khovanskiy; E Khramov; J Khubua; H Kim; M S Kim; S H Kim; N Kimura; O Kind; B T King; M King; R S B King; J Kirk; L E Kirsch; A E Kiryunin; T Kishimoto; D Kisielewska; T Kittelmann; A M Kiver; E Kladiva; M Klein; U Klein; K Kleinknecht; M Klemetti; A Klier; P Klimek; A Klimentov; R Klingenberg; J A Klinger; E B Klinkby; T Klioutchnikova; P F Klok; S Klous; E-E Kluge; T Kluge; P Kluit; S Kluth; N S Knecht; E Kneringer; J Knobloch; E B F G Knoops; A Knue; B R Ko; T Kobayashi; M Kobel; M Kocian; P Kodys; K Köneke; A C König; S Koenig; L Köpke; F Koetsveld; P Koevesarki; T Koffas; E Koffeman; L A Kogan; S Kohlmann; F Kohn; Z Kohout; T Kohriki; T Koi; T Kokott; G M Kolachev; H Kolanoski; V Kolesnikov; I Koletsou; J Koll; M Kollefrath; S D Kolya; A A Komar; Y Komori; T Kondo; T Kono; A I Kononov; R Konoplich; N Konstantinidis; A Kootz; S Koperny; K Korcyl; K Kordas; V Koreshev; A Korn; A Korol; I Korolkov; E V Korolkova; V A Korotkov; O Kortner; S Kortner; V V Kostyukhin; M J Kotamäki; S Kotov; V M Kotov; A Kotwal; C Kourkoumelis; V Kouskoura; A Koutsman; R Kowalewski; T Z Kowalski; W Kozanecki; A S Kozhin; V Kral; V A Kramarenko; G Kramberger; M W Krasny; A Krasznahorkay; J Kraus; J K Kraus; F Krejci; J Kretzschmar; N Krieger; P Krieger; K Kroeninger; H Kroha; J Kroll; J Kroseberg; J Krstic; U Kruchonak; H Krüger; T Kruker; N Krumnack; Z V Krumshteyn; A Kruth; T Kubota; S Kuday; S Kuehn; A Kugel; T Kuhl; D Kuhn; V Kukhtin; Y Kulchitsky; S Kuleshov; C Kummer; M Kuna; J Kunkle; A Kupco; H Kurashige; M Kurata; Y A Kurochkin; V Kus; E S Kuwertz; M Kuze; J Kvita; R Kwee; A La Rosa; L La Rotonda; L Labarga; J Labbe; S Lablak; C Lacasta; F Lacava; H Lacker; D Lacour; V R Lacuesta; E Ladygin; R Lafaye; B Laforge; T Lagouri; S Lai; E Laisne; M Lamanna; L Lambourne; C L Lampen; W Lampl; E Lancon; U Landgraf; M P J Landon; J L Lane; C Lange; A J Lankford; F Lanni; K Lantzsch; S Laplace; C Lapoire; J F Laporte; T Lari; A V Larionov; A Larner; C Lasseur; M Lassnig; P Laurelli; V Lavorini; W Lavrijsen; P Laycock; A B Lazarev; O Le Dortz; E Le Guirriec; C Le Maner; E Le Menedeu; C Lebel; T LeCompte; F Ledroit-Guillon; H Lee; J S H Lee; S C Lee; L Lee; M Lefebvre; M Legendre; A Leger; B C LeGeyt; F Legger; C Leggett; M Lehmacher; G Lehmann Miotto; X Lei; M A L Leite; R Leitner; D Lellouch; M Leltchouk; B Lemmer; V Lendermann; K J C Leney; T Lenz; G Lenzen; B Lenzi; K Leonhardt; S Leontsinis; F Lepold; C Leroy; J-R Lessard; C G Lester; C M Lester; J Levêque; D Levin; L J Levinson; M S Levitski; A Lewis; G H Lewis; A M Leyko; M Leyton; B Li; H Li; S Li; X Li; Z Liang; H Liao; B Liberti; P Lichard; M Lichtnecker; K Lie; W Liebig; C Limbach; A Limosani; M Limper; S C Lin; F Linde; J T Linnemann; E Lipeles; L Lipinsky; A Lipniacka; T M Liss; D Lissauer; A Lister; A M Litke; C Liu; D Liu; H Liu; J B Liu; M Liu; Y Liu; M Livan; S S A Livermore; A Lleres; J Llorente Merino; S L Lloyd; E Lobodzinska; P Loch; W S Lockman; T Loddenkoetter; F K Loebinger; A Loginov; C W Loh; T Lohse; K Lohwasser; M Lokajicek; J Loken; V P Lombardo; R E Long; L Lopes; D Lopez Mateos; J Lorenz; N Lorenzo Martinez; M Losada; P Loscutoff; F Lo Sterzo; M J Losty; X Lou; A Lounis; K F Loureiro; J Love; P A Love; A J Lowe; F Lu; H J Lubatti; C Luci; A Lucotte; A Ludwig; D Ludwig; I Ludwig; J Ludwig; F Luehring; G Luijckx; W Lukas; D Lumb; L Luminari; E Lund; B Lund-Jensen; B Lundberg; J Lundberg; J Lundquist; M Lungwitz; 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C Roda; D Roda Dos Santos; D Rodriguez; A Roe; S Roe; O Røhne; V Rojo; S Rolli; A Romaniouk; M Romano; V M Romanov; G Romeo; E Romero Adam; L Roos; E Ros; S Rosati; K Rosbach; A Rose; M Rose; G A Rosenbaum; E I Rosenberg; P L Rosendahl; O Rosenthal; L Rosselet; V Rossetti; E Rossi; L P Rossi; M Rotaru; I Roth; J Rothberg; D Rousseau; C R Royon; A Rozanov; Y Rozen; X Ruan; F Rubbo; I Rubinskiy; B Ruckert; N Ruckstuhl; V I Rud; C Rudolph; G Rudolph; F Rühr; F Ruggieri; A Ruiz-Martinez; L Rumyantsev; K Runge; Z Rurikova; N A Rusakovich; J P Rutherfoord; C Ruwiedel; P Ruzicka; Y F Ryabov; V Ryadovikov; P Ryan; M Rybar; G Rybkin; N C Ryder; S Rzaeva; A F Saavedra; I Sadeh; H F-W Sadrozinski; R Sadykov; F Safai Tehrani; H Sakamoto; G Salamanna; A Salamon; M Saleem; D Salek; D Salihagic; A Salnikov; J Salt; B M Salvachua Ferrando; D Salvatore; F Salvatore; A Salvucci; A Salzburger; D Sampsonidis; B H Samset; A Sanchez; V Sanchez Martinez; H Sandaker; H G Sander; M P Sanders; M Sandhoff; T Sandoval; 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M Thomson; R P Thun; F Tian; M J Tibbetts; T Tic; V O Tikhomirov; Y A Tikhonov; S Timoshenko; P Tipton; F J Tique Aires Viegas; S Tisserant; B Toczek; T Todorov; S Todorova-Nova; B Toggerson; J Tojo; S Tokár; K Tokunaga; K Tokushuku; K Tollefson; M Tomoto; L Tompkins; K Toms; G Tong; A Tonoyan; C Topfel; N D Topilin; I Torchiani; E Torrence; H Torres; E Torró Pastor; J Toth; F Touchard; D R Tovey; T Trefzger; L Tremblet; A Tricoli; I M Trigger; S Trincaz-Duvoid; M F Tripiana; W Trischuk; A Trivedi; B Trocmé; C Troncon; M Trottier-McDonald; M Trzebinski; A Trzupek; C Tsarouchas; J C-L Tseng; M Tsiakiris; P V Tsiareshka; D Tsionou; G Tsipolitis; V Tsiskaridze; E G Tskhadadze; I I Tsukerman; V Tsulaia; J-W Tsung; S Tsuno; D Tsybychev; A Tua; A Tudorache; V Tudorache; J M Tuggle; M Turala; D Turecek; I Turk Cakir; E Turlay; R Turra; P M Tuts; A Tykhonov; M Tylmad; M Tyndel; G Tzanakos; K Uchida; I Ueda; R Ueno; M Ugland; M Uhlenbrock; M Uhrmacher; F Ukegawa; G Unal; D G Underwood; A Undrus; G Unel; Y Unno; D Urbaniec; G Usai; M Uslenghi; L Vacavant; V Vacek; B Vachon; S Vahsen; J Valenta; P Valente; S Valentinetti; S Valkar; E Valladolid Gallego; S Vallecorsa; J A Valls Ferrer; H van der Graaf; E van der Kraaij; R Van Der Leeuw; E van der Poel; D van der Ster; N van Eldik; P van Gemmeren; Z van Kesteren; I van Vulpen; M Vanadia; W Vandelli; G Vandoni; A Vaniachine; P Vankov; F Vannucci; F Varela Rodriguez; R Vari; T Varol; D Varouchas; A Vartapetian; K E Varvell; V I Vassilakopoulos; F Vazeille; T Vazquez Schroeder; G Vegni; J J Veillet; C Vellidis; F Veloso; R Veness; S Veneziano; A Ventura; D Ventura; M Venturi; N Venturi; V Vercesi; M Verducci; W Verkerke; J C Vermeulen; A Vest; M C Vetterli; I Vichou; T Vickey; O E Vickey Boeriu; G H A Viehhauser; S Viel; M Villa; M Villaplana Perez; E Vilucchi; M G Vincter; E Vinek; V B Vinogradov; M Virchaux; J Virzi; O Vitells; M Viti; I Vivarelli; F Vives Vaque; S Vlachos; D Vladoiu; M Vlasak; N Vlasov; A Vogel; P Vokac; G Volpi; M Volpi; G Volpini; H von der Schmitt; J von Loeben; H von Radziewski; E von Toerne; V Vorobel; A P Vorobiev; V Vorwerk; M Vos; R Voss; T T Voss; J H Vossebeld; N Vranjes; M Vranjes Milosavljevic; V Vrba; M Vreeswijk; T Vu Anh; R Vuillermet; I Vukotic; W Wagner; P Wagner; H Wahlen; J Wakabayashi; S Walch; J Walder; R Walker; W Walkowiak; R Wall; P Waller; C Wang; H Wang; H Wang; J Wang; J Wang; J C Wang; R Wang; S M Wang; T Wang; A Warburton; C P Ward; M Warsinsky; A Washbrook; C Wasicki; P M Watkins; A T Watson; I J Watson; M F Watson; G Watts; S Watts; A T Waugh; B M Waugh; M Weber; M S Weber; P Weber; A R Weidberg; P Weigell; J Weingarten; C Weiser; H Wellenstein; P S Wells; T Wenaus; D Wendland; S Wendler; Z Weng; T Wengler; S Wenig; N Wermes; M Werner; P Werner; M Werth; M Wessels; J Wetter; C Weydert; K Whalen; S J Wheeler-Ellis; S P Whitaker; A White; M J White; S White; S R Whitehead; D Whiteson; D Whittington; F Wicek; D Wicke; F J Wickens; W Wiedenmann; M Wielers; P Wienemann; C Wiglesworth; L A M Wiik-Fuchs; P A Wijeratne; A Wildauer; M A Wildt; I Wilhelm; H G Wilkens; J Z Will; E Williams; H H Williams; W Willis; S Willocq; J A Wilson; M G Wilson; A Wilson; I Wingerter-Seez; S Winkelmann; F Winklmeier; M Wittgen; M W Wolter; H Wolters; W C Wong; G Wooden; B K Wosiek; J Wotschack; M J Woudstra; K W Wozniak; K Wraight; C Wright; M Wright; B Wrona; S L Wu; X Wu; Y Wu; E Wulf; R Wunstorf; B M Wynne; S Xella; M Xiao; S Xie; Y Xie; C Xu; D Xu; G Xu; B Yabsley; S Yacoob; M Yamada; H Yamaguchi; A Yamamoto; K Yamamoto; S Yamamoto; T Yamamura; T Yamanaka; J Yamaoka; T Yamazaki; Y Yamazaki; Z Yan; H Yang; U K Yang; Y Yang; Y Yang; Z Yang; S Yanush; Y Yao; Y Yasu; G V Ybeles Smit; J Ye; S Ye; M Yilmaz; R Yoosoofmiya; K Yorita; R Yoshida; C Young; C J Young; S Youssef; D Yu; J Yu; J Yu; L Yuan; A Yurkewicz; B Zabinski; V G Zaets; R Zaidan; A M Zaitsev; Z Zajacova; L Zanello; A Zaytsev; C Zeitnitz; M Zeller; M Zeman; A Zemla; C Zendler; O Zenin; T Zeniš; Z Zinonos; S Zenz; D Zerwas; G Zevi Della Porta; Z Zhan; D Zhang; H Zhang; J Zhang; X Zhang; Z Zhang; L Zhao; T Zhao; Z Zhao; A Zhemchugov; S Zheng; J Zhong; B Zhou; N Zhou; Y Zhou; C G Zhu; H Zhu; J Zhu; Y Zhu; X Zhuang; V Zhuravlov; D Zieminska; R Zimmermann; S Zimmermann; S Zimmermann; M Ziolkowski; R Zitoun; L Zivković; V V Zmouchko; G Zobernig; A Zoccoli; M Zur Nedden; V Zutshi; L Zwalinski Journal: Phys Rev Lett Date: 2012-08-21 Impact factor: 9.161
Authors: S Chatrchyan; V Khachatryan; A M Sirunyan; A Tumasyan; W Adam; E Aguilo; T Bergauer; M Dragicevic; J Erö; C Fabjan; M Friedl; R Frühwirth; V M Ghete; J Hammer; N Hörmann; J Hrubec; M Jeitler; W Kiesenhofer; V Knünz; M Krammer; I Krätschmer; D Liko; I Mikulec; M Pernicka; B Rahbaran; C Rohringer; H Rohringer; R Schöfbeck; J Strauss; A Taurok; W Waltenberger; C-E Wulz; V Mossolov; N Shumeiko; J Suarez Gonzalez; M Bansal; S Bansal; T Cornelis; E A De Wolf; X Janssen; S Luyckx; L Mucibello; S Ochesanu; B Roland; R Rougny; M Selvaggi; H Van Haevermaet; P Van Mechelen; N Van Remortel; A Van Spilbeeck; F Blekman; S Blyweert; J D'Hondt; R Gonzalez Suarez; A Kalogeropoulos; M Maes; A Olbrechts; W Van Doninck; P Van Mulders; G P Van Onsem; I Villella; B Clerbaux; G De Lentdecker; V Dero; A P R Gay; T Hreus; A Léonard; P E Marage; A Mohammadi; T Reis; L Thomas; C Vander Velde; P Vanlaer; J Wang; V Adler; K Beernaert; A Cimmino; S Costantini; G Garcia; M Grunewald; B Klein; J Lellouch; A Marinov; 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Authors: G Aad; B Abbott; J Abdallah; A A Abdelalim; A Abdesselam; O Abdinov; B Abi; M Abolins; O S AbouZeid; H Abramowicz; H Abreu; E Acerbi; B S Acharya; L Adamczyk; D L Adams; T N Addy; J Adelman; M Aderholz; S Adomeit; P Adragna; T Adye; S Aefsky; J A Aguilar-Saavedra; M Aharrouche; S P Ahlen; F Ahles; A Ahmad; M Ahsan; G Aielli; T Akdogan; T P A Åkesson; G Akimoto; A V Akimov; A Akiyama; M S Alam; M A Alam; J Albert; S Albrand; M Aleksa; I N Aleksandrov; F Alessandria; C Alexa; G Alexander; G Alexandre; T Alexopoulos; M Alhroob; M Aliev; G Alimonti; J Alison; M Aliyev; B M M Allbrooke; P P Allport; S E Allwood-Spiers; J Almond; A Aloisio; R Alon; A Alonso; B Alvarez Gonzalez; M G Alviggi; K Amako; P Amaral; C Amelung; V V Ammosov; A Amorim; G Amorós; N Amram; C Anastopoulos; L S Ancu; N Andari; T Andeen; C F Anders; G Anders; K J Anderson; A Andreazza; V Andrei; M-L Andrieux; X S Anduaga; A Angerami; F Anghinolfi; A Anisenkov; N Anjos; A Annovi; A Antonaki; M Antonelli; A Antonov; J Antos; F Anulli; S Aoun; L Aperio Bella; R Apolle; G Arabidze; I Aracena; Y Arai; A T H Arce; S Arfaoui; J-F Arguin; E Arik; M Arik; A J Armbruster; O Arnaez; C Arnault; A Artamonov; G Artoni; D Arutinov; S Asai; R Asfandiyarov; S Ask; B Åsman; L Asquith; K Assamagan; A Astbury; A Astvatsatourov; B Aubert; E Auge; K Augsten; M Aurousseau; G Avolio; R Avramidou; D Axen; C Ay; G Azuelos; Y Azuma; M A Baak; G Baccaglioni; C Bacci; A M Bach; H Bachacou; K Bachas; M Backes; M Backhaus; E Badescu; P Bagnaia; S Bahinipati; Y Bai; D C Bailey; T Bain; J T Baines; O K Baker; M D Baker; S Baker; E Banas; P Banerjee; Sw Banerjee; D Banfi; A Bangert; V Bansal; H S Bansil; L Barak; S P Baranov; A Barashkou; A Barbaro Galtieri; T Barber; E L Barberio; D Barberis; M Barbero; D Y Bardin; T Barillari; M Barisonzi; T Barklow; N Barlow; B M Barnett; R M Barnett; A Baroncelli; G Barone; A J Barr; F Barreiro; J Barreiro Guimarães da Costa; P Barrillon; R Bartoldus; A E Barton; V Bartsch; R L Bates; L Batkova; 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C Doglioni; T Doherty; Y Doi; J Dolejsi; I Dolenc; Z Dolezal; B A Dolgoshein; T Dohmae; M Donadelli; M Donega; J Donini; J Dopke; A Doria; A Dos Anjos; M Dosil; A Dotti; M T Dova; J D Dowell; A D Doxiadis; A T Doyle; Z Drasal; J Drees; N Dressnandt; H Drevermann; C Driouichi; M Dris; J Dubbert; S Dube; E Duchovni; G Duckeck; A Dudarev; F Dudziak; M Dührssen; I P Duerdoth; L Duflot; M-A Dufour; M Dunford; H Duran Yildiz; R Duxfield; M Dwuznik; F Dydak; M Düren; W L Ebenstein; J Ebke; S Eckweiler; K Edmonds; C A Edwards; N C Edwards; W Ehrenfeld; T Ehrich; T Eifert; G Eigen; K Einsweiler; E Eisenhandler; T Ekelof; M El Kacimi; M Ellert; S Elles; F Ellinghaus; K Ellis; N Ellis; J Elmsheuser; M Elsing; D Emeliyanov; R Engelmann; A Engl; B Epp; A Eppig; J Erdmann; A Ereditato; D Eriksson; J Ernst; M Ernst; J Ernwein; D Errede; S Errede; E Ertel; M Escalier; C Escobar; X Espinal Curull; B Esposito; F Etienne; A I Etienvre; E Etzion; D Evangelakou; H Evans; L Fabbri; C Fabre; R M Fakhrutdinov; S Falciano; Y Fang; M Fanti; A Farbin; A Farilla; J Farley; T Farooque; S M Farrington; P Farthouat; P Fassnacht; D Fassouliotis; B Fatholahzadeh; A Favareto; L Fayard; S Fazio; R Febbraro; P Federic; O L Fedin; W Fedorko; M Fehling-Kaschek; L Feligioni; D Fellmann; C Feng; E J Feng; A B Fenyuk; J Ferencei; J Ferland; W Fernando; S Ferrag; J Ferrando; V Ferrara; A Ferrari; P Ferrari; R Ferrari; D E Ferreira de Lima; A Ferrer; M L Ferrer; D Ferrere; C Ferretti; A Ferretto Parodi; M Fiascaris; F Fiedler; A Filipčič; A Filippas; F Filthaut; M Fincke-Keeler; M C N Fiolhais; L Fiorini; A Firan; G Fischer; P Fischer; M J Fisher; M Flechl; I Fleck; J Fleckner; P Fleischmann; S Fleischmann; T Flick; A Floderus; L R Flores Castillo; M J Flowerdew; M Fokitis; T Fonseca Martin; D A Forbush; A Formica; A Forti; D Fortin; J M Foster; D Fournier; A Foussat; A J Fowler; K Fowler; H Fox; P Francavilla; S Franchino; D Francis; T Frank; M Franklin; S Franz; M Fraternali; S Fratina; S T French; F Friedrich; R Froeschl; D Froidevaux; J A Frost; C Fukunaga; E Fullana Torregrosa; J Fuster; C Gabaldon; O Gabizon; T Gadfort; S Gadomski; G Gagliardi; P Gagnon; C Galea; E J Gallas; V Gallo; B J Gallop; P Gallus; K K Gan; Y S Gao; V A Gapienko; A Gaponenko; F Garberson; M Garcia-Sciveres; C García; J E García Navarro; R W Gardner; N Garelli; H Garitaonandia; V Garonne; J Garvey; C Gatti; G Gaudio; B Gaur; L Gauthier; I L Gavrilenko; C Gay; G Gaycken; J-C Gayde; E N Gazis; P Ge; C N P Gee; D A A Geerts; Ch Geich-Gimbel; K Gellerstedt; C Gemme; A Gemmell; M H Genest; S Gentile; M George; S George; P Gerlach; A Gershon; C Geweniger; H Ghazlane; N Ghodbane; B Giacobbe; S Giagu; V Giakoumopoulou; V Giangiobbe; F Gianotti; B Gibbard; A Gibson; S M Gibson; L M Gilbert; V Gilewsky; D Gillberg; A R Gillman; D M Gingrich; J Ginzburg; N Giokaris; M P Giordani; R Giordano; F M Giorgi; P Giovannini; P F Giraud; D Giugni; M Giunta; P Giusti; B K Gjelsten; L K Gladilin; C Glasman; J Glatzer; A Glazov; K W Glitza; G L Glonti; J R Goddard; J Godfrey; J Godlewski; M Goebel; T Göpfert; C Goeringer; C Gössling; T Göttfert; S Goldfarb; T Golling; A Gomes; L S Gomez Fajardo; R Gonçalo; J Goncalves Pinto Firmino Da Costa; L Gonella; A Gonidec; S Gonzalez; S González de la Hoz; G Gonzalez Parra; M L Gonzalez Silva; S Gonzalez-Sevilla; J J Goodson; L Goossens; P A Gorbounov; H A Gordon; I Gorelov; G Gorfine; B Gorini; E Gorini; A Gorišek; E Gornicki; S A Gorokhov; V N Goryachev; B Gosdzik; M Gosselink; M I Gostkin; I Gough Eschrich; M Gouighri; D Goujdami; M P Goulette; A G Goussiou; C Goy; S Gozpinar; I Grabowska-Bold; P Grafström; K-J Grahn; F Grancagnolo; S Grancagnolo; V Grassi; V Gratchev; N Grau; H M Gray; J A Gray; E Graziani; O G Grebenyuk; T Greenshaw; Z D Greenwood; K Gregersen; I M Gregor; P Grenier; J Griffiths; N Grigalashvili; A A Grillo; S Grinstein; Y V Grishkevich; J-F Grivaz; M Groh; E Gross; J Grosse-Knetter; J Groth-Jensen; K Grybel; V J Guarino; D Guest; C Guicheney; A Guida; S Guindon; H Guler; J Gunther; B Guo; J Guo; A Gupta; Y Gusakov; V N Gushchin; P Gutierrez; N Guttman; O Gutzwiller; C Guyot; C Gwenlan; C B Gwilliam; A Haas; S Haas; C Haber; H K Hadavand; D R Hadley; P Haefner; F Hahn; S Haider; Z Hajduk; H Hakobyan; D Hall; J Haller; K Hamacher; P Hamal; M Hamer; A Hamilton; S Hamilton; H Han; L Han; K Hanagaki; K Hanawa; M Hance; C Handel; P Hanke; J R Hansen; J B Hansen; J D Hansen; P H Hansen; P Hansson; K Hara; G A Hare; T Harenberg; S Harkusha; D Harper; R D Harrington; O M Harris; K Harrison; J Hartert; F Hartjes; T Haruyama; A Harvey; S Hasegawa; Y Hasegawa; S Hassani; M Hatch; D Hauff; S Haug; M Hauschild; R Hauser; M Havranek; B M Hawes; C M Hawkes; R J Hawkings; A D Hawkins; D Hawkins; T Hayakawa; T Hayashi; D Hayden; H S Hayward; S J Haywood; E Hazen; M He; S J Head; V Hedberg; L Heelan; S Heim; B Heinemann; S Heisterkamp; L Helary; C Heller; M Heller; S Hellman; D Hellmich; C Helsens; R C W Henderson; M Henke; A Henrichs; A M Henriques Correia; S Henrot-Versille; F Henry-Couannier; C Hensel; T Henß; C M Hernandez; Y Hernández Jiménez; R Herrberg; A D Hershenhorn; G Herten; R Hertenberger; L Hervas; G G Hesketh; N P Hessey; E Higón-Rodriguez; D Hill; J C Hill; N Hill; K H Hiller; S Hillert; S J Hillier; I Hinchliffe; E Hines; M Hirose; F Hirsch; D Hirschbuehl; J Hobbs; N Hod; M C Hodgkinson; P Hodgson; A Hoecker; M R Hoeferkamp; J Hoffman; D Hoffmann; M Hohlfeld; M Holder; S O Holmgren; T Holy; J L Holzbauer; Y Homma; T M Hong; L Hooft van Huysduynen; T Horazdovsky; C Horn; S Horner; J-Y Hostachy; S Hou; M A Houlden; A Hoummada; J Howarth; D F Howell; I Hristova; J Hrivnac; I Hruska; T Hryn'ova; P J Hsu; S-C Hsu; G S Huang; Z Hubacek; F Hubaut; F Huegging; A Huettmann; T B Huffman; E W Hughes; G Hughes; R E Hughes-Jones; M Huhtinen; P Hurst; M Hurwitz; U Husemann; N Huseynov; J Huston; J Huth; G Iacobucci; G Iakovidis; M Ibbotson; I Ibragimov; R Ichimiya; L Iconomidou-Fayard; J Idarraga; P Iengo; O Igonkina; Y Ikegami; M Ikeno; Y Ilchenko; D Iliadis; N Ilic; M Imori; T Ince; J Inigo-Golfin; P Ioannou; M Iodice; V Ippolito; A Irles Quiles; C Isaksson; A Ishikawa; M Ishino; R Ishmukhametov; C Issever; S Istin; A V Ivashin; W Iwanski; H Iwasaki; J M Izen; V Izzo; B Jackson; J N Jackson; P Jackson; M R Jaekel; V Jain; K Jakobs; S Jakobsen; J Jakubek; D K Jana; E Jankowski; E Jansen; H Jansen; A Jantsch; M Janus; G Jarlskog; L Jeanty; K Jelen; I Jen-La Plante; P Jenni; A Jeremie; P Jež; S Jézéquel; M K Jha; H Ji; W Ji; J Jia; Y Jiang; M Jimenez Belenguer; G Jin; S Jin; O Jinnouchi; M D Joergensen; D Joffe; L G Johansen; M Johansen; K E Johansson; P Johansson; S Johnert; K A Johns; K Jon-And; G Jones; R W L Jones; T W Jones; T J Jones; O Jonsson; C Joram; P M Jorge; J Joseph; J Jovicevic; T Jovin; X Ju; C A Jung; R M Jungst; V Juranek; P Jussel; A Juste Rozas; V V Kabachenko; S Kabana; M Kaci; A Kaczmarska; P Kadlecik; M Kado; H Kagan; M Kagan; S Kaiser; E Kajomovitz; S Kalinin; L V Kalinovskaya; S Kama; N Kanaya; M Kaneda; S Kaneti; T Kanno; V A Kantserov; J Kanzaki; B Kaplan; A Kapliy; J Kaplon; D Kar; M Karagounis; M Karagoz; M Karnevskiy; K Karr; V Kartvelishvili; A N Karyukhin; L Kashif; G Kasieczka; R D Kass; A Kastanas; M Kataoka; Y Kataoka; E Katsoufis; J Katzy; V Kaushik; K Kawagoe; T Kawamoto; G Kawamura; M S Kayl; V A Kazanin; M Y Kazarinov; R Keeler; R Kehoe; M Keil; G D Kekelidze; J Kennedy; C J Kenney; M Kenyon; O Kepka; N Kerschen; B P Kerševan; S Kersten; K Kessoku; J Keung; F Khalil-Zada; H Khandanyan; A Khanov; D Kharchenko; A Khodinov; A G Kholodenko; A Khomich; T J Khoo; G Khoriauli; A Khoroshilov; N Khovanskiy; V Khovanskiy; E Khramov; J Khubua; H Kim; M S Kim; S H Kim; N Kimura; O Kind; B T King; M King; R S B King; J Kirk; L E Kirsch; A E Kiryunin; T Kishimoto; D Kisielewska; T Kittelmann; A M Kiver; E Kladiva; J Klaiber-Lodewigs; M Klein; U Klein; K Kleinknecht; M Klemetti; A Klier; P Klimek; A Klimentov; R Klingenberg; J A Klinger; E B Klinkby; T Klioutchnikova; P F Klok; S Klous; E-E Kluge; T Kluge; P Kluit; S Kluth; N S Knecht; E Kneringer; J Knobloch; E B F G Knoops; A Knue; B R Ko; T Kobayashi; M Kobel; M Kocian; P Kodys; K Köneke; A C König; S Koenig; L Köpke; F Koetsveld; P Koevesarki; T Koffas; E Koffeman; L A Kogan; F Kohn; Z Kohout; T Kohriki; T Koi; T Kokott; G M Kolachev; H Kolanoski; V Kolesnikov; I Koletsou; J Koll; M Kollefrath; S D Kolya; A A Komar; Y Komori; T Kondo; T Kono; A I Kononov; R Konoplich; N Konstantinidis; A Kootz; S Koperny; K Korcyl; K Kordas; V Koreshev; A Korn; A Korol; I Korolkov; E V Korolkova; V A Korotkov; O Kortner; S Kortner; V V Kostyukhin; M J Kotamäki; S Kotov; V M Kotov; A Kotwal; C Kourkoumelis; V Kouskoura; A Koutsman; R Kowalewski; T Z Kowalski; W Kozanecki; A S Kozhin; V Kral; V A Kramarenko; G Kramberger; M W Krasny; A Krasznahorkay; J Kraus; J K Kraus; A Kreisel; F Krejci; J Kretzschmar; N Krieger; P Krieger; K Kroeninger; H Kroha; J Kroll; J Kroseberg; J Krstic; U Kruchonak; H Krüger; T Kruker; N Krumnack; Z V Krumshteyn; A Kruth; T Kubota; S Kuday; S Kuehn; A Kugel; T Kuhl; D Kuhn; V Kukhtin; Y Kulchitsky; S Kuleshov; C Kummer; M Kuna; N Kundu; J Kunkle; A Kupco; H Kurashige; M Kurata; Y A Kurochkin; V Kus; E S Kuwertz; M Kuze; J Kvita; R Kwee; A La Rosa; L La Rotonda; L Labarga; J Labbe; S Lablak; C Lacasta; F Lacava; H Lacker; D Lacour; V R Lacuesta; E Ladygin; R Lafaye; B Laforge; T Lagouri; S Lai; E Laisne; M Lamanna; C L Lampen; W Lampl; E Lancon; U Landgraf; M P J Landon; J L Lane; C Lange; A J Lankford; F Lanni; K Lantzsch; S Laplace; C Lapoire; J F Laporte; T Lari; A V Larionov; A Larner; C Lasseur; M Lassnig; P Laurelli; V Lavorini; W Lavrijsen; P Laycock; A B Lazarev; O Le Dortz; E Le Guirriec; C Le Maner; E Le Menedeu; C Lebel; T LeCompte; F Ledroit-Guillon; H Lee; J S H Lee; S C Lee; L Lee; M Lefebvre; M Legendre; A Leger; B C LeGeyt; F Legger; C Leggett; M Lehmacher; G Lehmann Miotto; X Lei; M A L Leite; R Leitner; D Lellouch; M Leltchouk; B Lemmer; V Lendermann; K J C Leney; T Lenz; G Lenzen; B Lenzi; K Leonhardt; S Leontsinis; C Leroy; J-R Lessard; J Lesser; C G Lester; A Leung Fook Cheong; J Levêque; D Levin; L J Levinson; M S Levitski; A Lewis; G H Lewis; A M Leyko; M Leyton; B Li; H Li; S Li; X Li; Z Liang; H Liao; B Liberti; P Lichard; M Lichtnecker; K Lie; W Liebig; R Lifshitz; C Limbach; A Limosani; M Limper; S C Lin; F Linde; J T Linnemann; E Lipeles; L Lipinsky; A Lipniacka; T M Liss; D Lissauer; A Lister; A M Litke; C Liu; D Liu; H Liu; J B Liu; M Liu; Y Liu; M Livan; S S A Livermore; A Lleres; J Llorente Merino; S L Lloyd; E Lobodzinska; P Loch; W S Lockman; T Loddenkoetter; F K Loebinger; A Loginov; C W Loh; T Lohse; K Lohwasser; M Lokajicek; J Loken; V P Lombardo; R E Long; L Lopes; D Lopez Mateos; J Lorenz; N Lorenzo Martinez; M Losada; P Loscutoff; F Lo Sterzo; M J Losty; X Lou; A Lounis; K F Loureiro; J Love; P A Love; A J Lowe; F Lu; H J Lubatti; C Luci; A Lucotte; A Ludwig; D Ludwig; I Ludwig; J Ludwig; F Luehring; G Luijckx; D Lumb; L Luminari; E Lund; B Lund-Jensen; B Lundberg; J Lundberg; J Lundquist; M Lungwitz; G Lutz; D Lynn; J Lys; E Lytken; H Ma; L L Ma; J A Macana Goia; G Maccarrone; A Macchiolo; B Maček; J Machado Miguens; R Mackeprang; R J Madaras; W F Mader; R Maenner; T Maeno; P Mättig; S Mättig; L Magnoni; E Magradze; Y Mahalalel; K Mahboubi; G Mahout; C Maiani; C Maidantchik; A Maio; S Majewski; Y Makida; N Makovec; P Mal; B Malaescu; Pa Malecki; P Malecki; V P Maleev; F Malek; U Mallik; D Malon; C Malone; S Maltezos; V Malyshev; S Malyukov; R Mameghani; J Mamuzic; A Manabe; L Mandelli; I Mandić; R Mandrysch; J Maneira; P S Mangeard; L Manhaes de Andrade Filho; I D Manjavidze; A Mann; P M Manning; A Manousakis-Katsikakis; B Mansoulie; A Manz; A Mapelli; L Mapelli; L March; J F Marchand; F Marchese; G Marchiori; M Marcisovsky; C P Marino; F Marroquim; R Marshall; Z Marshall; F K Martens; S Marti-Garcia; A J Martin; B Martin; B Martin; F F Martin; J P Martin; Ph Martin; T A Martin; V J Martin; B Martin Dit Latour; S Martin-Haugh; M Martinez; V Martinez Outschoorn; A C Martyniuk; M Marx; F Marzano; A Marzin; L Masetti; T Mashimo; R Mashinistov; J Masik; A L Maslennikov; I Massa; G Massaro; N Massol; P Mastrandrea; A Mastroberardino; T Masubuchi; P Matricon; H Matsumoto; H Matsunaga; T Matsushita; C Mattravers; J M Maugain; J Maurer; S J Maxfield; D A Maximov; E N May; A Mayne; R Mazini; M Mazur; M Mazzanti; S P Mc Kee; A McCarn; R L McCarthy; T G McCarthy; N A McCubbin; K W McFarlane; J A Mcfayden; H McGlone; G Mchedlidze; R A McLaren; T Mclaughlan; S J McMahon; R A McPherson; A Meade; J Mechnich; M Mechtel; M Medinnis; R Meera-Lebbai; T Meguro; R Mehdiyev; S Mehlhase; A Mehta; K Meier; B Meirose; C Melachrinos; B R Mellado Garcia; L Mendoza Navas; Z Meng; A Mengarelli; S Menke; C Menot; E Meoni; K M Mercurio; P Mermod; L Merola; C Meroni; F S Merritt; H Merritt; A Messina; J Metcalfe; A S Mete; C Meyer; C Meyer; J-P Meyer; J Meyer; J Meyer; T C Meyer; W T Meyer; J Miao; S Michal; L Micu; R P Middleton; S Migas; L Mijović; G Mikenberg; M Mikestikova; M Mikuž; D W Miller; R J Miller; W J Mills; C Mills; A Milov; D A Milstead; D Milstein; A A Minaenko; M Miñano Moya; I A Minashvili; A I Mincer; B Mindur; M Mineev; Y Ming; L M Mir; G Mirabelli; L Miralles Verge; A Misiejuk; J Mitrevski; G Y Mitrofanov; V A Mitsou; S Mitsui; P S Miyagawa; K Miyazaki; J U Mjörnmark; T Moa; P Mockett; S Moed; V Moeller; K Mönig; N Möser; S Mohapatra; W Mohr; S Mohrdieck-Möck; A M Moisseev; R Moles-Valls; J Molina-Perez; J Monk; E Monnier; S Montesano; F Monticelli; S Monzani; R W Moore; G F Moorhead; C Mora Herrera; A Moraes; N Morange; J Morel; G Morello; D Moreno; M Moreno Llácer; P Morettini; M Morgenstern; M Morii; J Morin; A K Morley; G Mornacchi; S V Morozov; J D Morris; L Morvaj; H G Moser; M Mosidze; J Moss; R Mount; E Mountricha; S V Mouraviev; E J W Moyse; M Mudrinic; F Mueller; J Mueller; K Mueller; T A Müller; T Mueller; D Muenstermann; A Muir; Y Munwes; W J Murray; I Mussche; E Musto; A G Myagkov; M Myska; J Nadal; K Nagai; K Nagano; A Nagarkar; 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T Ohsugi; S Okada; H Okawa; Y Okumura; T Okuyama; A Olariu; M Olcese; A G Olchevski; S A Olivares Pino; M Oliveira; D Oliveira Damazio; E Oliver Garcia; D Olivito; A Olszewski; J Olszowska; C Omachi; A Onofre; P U E Onyisi; C J Oram; M J Oreglia; Y Oren; D Orestano; I Orlov; C Oropeza Barrera; R S Orr; B Osculati; R Ospanov; C Osuna; G Otero Y Garzon; J P Ottersbach; M Ouchrif; E A Ouellette; F Ould-Saada; A Ouraou; Q Ouyang; A Ovcharova; M Owen; S Owen; V E Ozcan; N Ozturk; A Pacheco Pages; C Padilla Aranda; S Pagan Griso; E Paganis; F Paige; P Pais; K Pajchel; G Palacino; C P Paleari; S Palestini; D Pallin; A Palma; J D Palmer; Y B Pan; E Panagiotopoulou; B Panes; N Panikashvili; S Panitkin; D Pantea; M Panuskova; V Paolone; A Papadelis; Th D Papadopoulou; A Paramonov; D Paredes Hernandez; W Park; M A Parker; F Parodi; J A Parsons; U Parzefall; E Pasqualucci; S Passaggio; A Passeri; F Pastore; Fr Pastore; G Pásztor; S Pataraia; N Patel; J R Pater; S Patricelli; T Pauly; M Pecsy; M I Pedraza Morales; S V Peleganchuk; H Peng; R Pengo; B Penning; A Penson; J Penwell; M Perantoni; K Perez; T Perez Cavalcanti; E Perez Codina; M T Pérez García-Estañ; V Perez Reale; L Perini; H Pernegger; R Perrino; P Perrodo; S Persembe; A Perus; V D Peshekhonov; K Peters; B A Petersen; J Petersen; T C Petersen; E Petit; A Petridis; C Petridou; E Petrolo; F Petrucci; D Petschull; M Petteni; R Pezoa; A Phan; P W Phillips; G Piacquadio; E Piccaro; M Piccinini; S M Piec; R Piegaia; D T Pignotti; J E Pilcher; A D Pilkington; J Pina; M Pinamonti; A Pinder; J L Pinfold; J Ping; B Pinto; O Pirotte; C Pizio; M Plamondon; M-A Pleier; A V Pleskach; A Poblaguev; S Poddar; F Podlyski; L Poggioli; T Poghosyan; M Pohl; F Polci; G Polesello; A Policicchio; A Polini; J Poll; V Polychronakos; D M Pomarede; D Pomeroy; K Pommès; L Pontecorvo; B G Pope; G A Popeneciu; D S Popovic; A Poppleton; X Portell Bueso; C Posch; G E Pospelov; S Pospisil; I N Potrap; C J Potter; C T Potter; G Poulard; J Poveda; V Pozdnyakov; R Prabhu; P Pralavorio; A Pranko; S Prasad; R Pravahan; S Prell; K Pretzl; L Pribyl; D Price; J Price; L E Price; M J Price; D Prieur; M Primavera; K Prokofiev; F Prokoshin; S Protopopescu; J Proudfoot; X Prudent; M Przybycien; H Przysiezniak; S Psoroulas; E Ptacek; E Pueschel; J Purdham; M Purohit; P Puzo; Y Pylypchenko; J Qian; Z Qian; Z Qin; A Quadt; D R Quarrie; W B Quayle; F Quinonez; M Raas; V Radescu; B Radics; P Radloff; T Rador; F Ragusa; G Rahal; A M Rahimi; D Rahm; S Rajagopalan; M Rammensee; M Rammes; A S Randle-Conde; K Randrianarivony; P N Ratoff; F Rauscher; T C Rave; M Raymond; A L Read; D M Rebuzzi; A Redelbach; G Redlinger; R Reece; K Reeves; A Reichold; E Reinherz-Aronis; A Reinsch; I Reisinger; M Relich; C Rembser; Z L Ren; A Renaud; M Rescigno; S Resconi; B Resende; P Reznicek; R Rezvani; A Richards; R Richter; E Richter-Was; M Ridel; M Rijpstra; M Rijssenbeek; A Rimoldi; L Rinaldi; R R Rios; I Riu; G Rivoltella; F Rizatdinova; E Rizvi; S H Robertson; A Robichaud-Veronneau; D Robinson; J E M Robinson; A Robson; J G Rocha de Lima; C Roda; D Roda Dos Santos; D Rodriguez; A Roe; S Roe; O Røhne; V Rojo; S Rolli; A Romaniouk; M Romano; V M Romanov; G Romeo; E Romero Adam; L Roos; E Ros; S Rosati; K Rosbach; A Rose; M Rose; G A Rosenbaum; E I Rosenberg; P L Rosendahl; O Rosenthal; L Rosselet; V Rossetti; E Rossi; L P Rossi; M Rotaru; I Roth; J Rothberg; D Rousseau; C R Royon; A Rozanov; Y Rozen; X Ruan; I Rubinskiy; B Ruckert; N Ruckstuhl; V I Rud; C Rudolph; G Rudolph; F Rühr; F Ruggieri; A Ruiz-Martinez; V Rumiantsev; L Rumyantsev; K Runge; Z Rurikova; N A Rusakovich; J P Rutherfoord; C Ruwiedel; P Ruzicka; Y F Ryabov; V Ryadovikov; P Ryan; M Rybar; G Rybkin; N C Ryder; S Rzaeva; A F Saavedra; I Sadeh; H F-W Sadrozinski; R Sadykov; F Safai Tehrani; H Sakamoto; G Salamanna; A Salamon; M Saleem; D Salihagic; A Salnikov; J Salt; B M Salvachua Ferrando; D Salvatore; F Salvatore; A Salvucci; A Salzburger; D Sampsonidis; B H Samset; A Sanchez; V Sanchez Martinez; H Sandaker; H G Sander; M P Sanders; M Sandhoff; T Sandoval; C Sandoval; R Sandstroem; S Sandvoss; D P C Sankey; A Sansoni; C Santamarina Rios; C Santoni; R Santonico; H Santos; J G Saraiva; T Sarangi; E Sarkisyan-Grinbaum; F Sarri; G Sartisohn; O Sasaki; N Sasao; I Satsounkevitch; G Sauvage; E Sauvan; J B Sauvan; P Savard; V Savinov; D O Savu; L Sawyer; D H Saxon; L P Says; C Sbarra; A Sbrizzi; O Scallon; D A Scannicchio; M Scarcella; J Schaarschmidt; P Schacht; U Schäfer; S Schaepe; S Schaetzel; A C Schaffer; D Schaile; R D Schamberger; A G Schamov; V Scharf; V A Schegelsky; D Scheirich; M Schernau; M I Scherzer; C Schiavi; J Schieck; M Schioppa; S Schlenker; J L Schlereth; E Schmidt; K Schmieden; C Schmitt; S Schmitt; M Schmitz; A Schöning; M Schott; D Schouten; J Schovancova; M Schram; C Schroeder; N Schroer; G Schuler; M J Schultens; J Schultes; H-C Schultz-Coulon; H Schulz; J W Schumacher; M Schumacher; B A Schumm; Ph Schune; C Schwanenberger; A Schwartzman; Ph Schwemling; R Schwienhorst; R Schwierz; J Schwindling; T Schwindt; M Schwoerer; W G Scott; J Searcy; G Sedov; E Sedykh; E Segura; S C Seidel; A Seiden; F Seifert; J M Seixas; G Sekhniaidze; K E Selbach; D M Seliverstov; B Sellden; G Sellers; M Seman; N Semprini-Cesari; C Serfon; L Serin; L Serkin; R Seuster; H Severini; M E Sevior; A Sfyrla; E Shabalina; M Shamim; L Y Shan; J T Shank; Q T Shao; M Shapiro; P B Shatalov; L Shaver; K Shaw; D Sherman; P Sherwood; A Shibata; H Shichi; S Shimizu; M Shimojima; T Shin; M Shiyakova; A Shmeleva; M J Shochet; D Short; S Shrestha; E Shulga; M A Shupe; P Sicho; A Sidoti; F Siegert; Dj Sijacki; O Silbert; J Silva; Y Silver; D Silverstein; S B Silverstein; V Simak; O Simard; Lj Simic; S Simion; B Simmons; M Simonyan; P Sinervo; N B Sinev; V Sipica; G Siragusa; A Sircar; A N Sisakyan; S Yu Sivoklokov; J Sjölin; T B Sjursen; L A Skinnari; H P Skottowe; K Skovpen; P Skubic; N Skvorodnev; M Slater; T Slavicek; K Sliwa; J Sloper; V Smakhtin; B H Smart; S Yu Smirnov; Y Smirnov; L N Smirnova; O Smirnova; B C Smith; D Smith; K M Smith; M Smizanska; K Smolek; A A Snesarev; S W Snow; J Snow; J Snuverink; S Snyder; M Soares; R Sobie; J Sodomka; A Soffer; C A Solans; M Solar; J Solc; E Soldatov; U Soldevila; E Solfaroli Camillocci; A A Solodkov; O V Solovyanov; N Soni; V Sopko; B Sopko; M Sosebee; R Soualah; A Soukharev; S Spagnolo; F Spanò; R Spighi; G Spigo; F Spila; R Spiwoks; M Spousta; T Spreitzer; B Spurlock; R D St Denis; J Stahlman; R Stamen; E Stanecka; R W Stanek; C Stanescu; S Stapnes; E A Starchenko; J Stark; P Staroba; P Starovoitov; A Staude; P Stavina; G Steele; P Steinbach; P Steinberg; I Stekl; B Stelzer; H J Stelzer; O Stelzer-Chilton; H Stenzel; S Stern; K Stevenson; G A Stewart; J A Stillings; M C Stockton; K Stoerig; G Stoicea; S Stonjek; P Strachota; A R Stradling; A Straessner; J Strandberg; S Strandberg; A Strandlie; M Strang; E Strauss; M Strauss; P Strizenec; R Ströhmer; D M Strom; J A Strong; R Stroynowski; J Strube; B Stugu; I Stumer; J Stupak; P Sturm; N A Styles; D A Soh; D Su; Hs Subramania; A Succurro; Y Sugaya; T Sugimoto; C Suhr; K Suita; M Suk; V V Sulin; S Sultansoy; T Sumida; X Sun; J E Sundermann; K Suruliz; S Sushkov; G Susinno; M R Sutton; Y Suzuki; Y Suzuki; M Svatos; Yu M Sviridov; S Swedish; I Sykora; T Sykora; B Szeless; J Sánchez; D Ta; K Tackmann; A Taffard; R Tafirout; N Taiblum; Y Takahashi; H Takai; R Takashima; H Takeda; T Takeshita; Y Takubo; M Talby; A Talyshev; M C Tamsett; J Tanaka; R Tanaka; S Tanaka; S Tanaka; Y Tanaka; A J Tanasijczuk; K Tani; N Tannoury; G P Tappern; S Tapprogge; D Tardif; S Tarem; F Tarrade; G F Tartarelli; P Tas; M Tasevsky; E Tassi; M Tatarkhanov; Y Tayalati; C Taylor; F E Taylor; G N Taylor; W Taylor; M Teinturier; M Teixeira Dias Castanheira; P Teixeira-Dias; K K Temming; H Ten Kate; P K Teng; S Terada; K Terashi; J Terron; M Testa; R J Teuscher; J Thadome; J Therhaag; T Theveneaux-Pelzer; M Thioye; S Thoma; J P Thomas; E N Thompson; P D Thompson; P D Thompson; A S Thompson; L A Thomsen; E Thomson; M Thomson; R P Thun; F Tian; M J Tibbetts; T Tic; V O Tikhomirov; Y A Tikhonov; S Timoshenko; P Tipton; F J Tique Aires Viegas; S Tisserant; B Toczek; T Todorov; S Todorova-Nova; B Toggerson; J Tojo; S Tokár; K Tokunaga; K Tokushuku; K Tollefson; M Tomoto; L Tompkins; K Toms; G Tong; A Tonoyan; C Topfel; N D Topilin; I Torchiani; E Torrence; H Torres; E Torró Pastor; J Toth; F Touchard; D R Tovey; T Trefzger; L Tremblet; A Tricoli; I M Trigger; S Trincaz-Duvoid; T N Trinh; M F Tripiana; W Trischuk; A Trivedi; B Trocmé; C Troncon; M Trottier-McDonald; M Trzebinski; A Trzupek; C Tsarouchas; J C-L Tseng; M Tsiakiris; P V Tsiareshka; D Tsionou; G Tsipolitis; V Tsiskaridze; E G Tskhadadze; I I Tsukerman; V Tsulaia; J-W Tsung; S Tsuno; D Tsybychev; A Tua; A Tudorache; V Tudorache; J M Tuggle; M Turala; D Turecek; I Turk Cakir; E Turlay; R Turra; P M Tuts; A Tykhonov; M Tylmad; M Tyndel; G Tzanakos; K Uchida; I Ueda; R Ueno; M Ugland; M Uhlenbrock; M Uhrmacher; F Ukegawa; G Unal; D G Underwood; A Undrus; G Unel; Y Unno; D Urbaniec; G Usai; M Uslenghi; L Vacavant; V Vacek; B Vachon; S Vahsen; J Valenta; P Valente; S Valentinetti; S Valkar; E Valladolid Gallego; S Vallecorsa; J A Valls Ferrer; H van der Graaf; E van der Kraaij; R Van Der Leeuw; E van der Poel; D van der Ster; N van Eldik; P van Gemmeren; Z van Kesteren; I van Vulpen; M Vanadia; W Vandelli; G Vandoni; A Vaniachine; P Vankov; F Vannucci; F Varela Rodriguez; R Vari; E W Varnes; D Varouchas; A Vartapetian; K E Varvell; V I Vassilakopoulos; F Vazeille; T Vazquez Schroeder; G Vegni; J J Veillet; C Vellidis; F Veloso; R Veness; S Veneziano; A Ventura; D Ventura; M Venturi; N Venturi; V Vercesi; M Verducci; W Verkerke; J C Vermeulen; A Vest; M C Vetterli; I Vichou; T Vickey; O E Vickey Boeriu; G H A Viehhauser; S Viel; M Villa; M Villaplana Perez; E Vilucchi; M G Vincter; E Vinek; V B Vinogradov; M Virchaux; J Virzi; O Vitells; M Viti; I Vivarelli; F Vives Vaque; S Vlachos; D Vladoiu; M Vlasak; N Vlasov; A Vogel; P Vokac; G Volpi; M Volpi; G Volpini; H von der Schmitt; J von Loeben; H von Radziewski; E von Toerne; V Vorobel; A P Vorobiev; V Vorwerk; M Vos; R Voss; T T Voss; J H Vossebeld; N Vranjes; M Vranjes Milosavljevic; V Vrba; M Vreeswijk; T Vu Anh; R Vuillermet; I Vukotic; W Wagner; P Wagner; H Wahlen; J Wakabayashi; J Walbersloh; S Walch; J Walder; R Walker; W Walkowiak; R Wall; P Waller; C Wang; H Wang; H Wang; J Wang; J Wang; J C Wang; R Wang; S M Wang; A Warburton; C P Ward; M Warsinsky; P M Watkins; A T Watson; I J Watson; M F Watson; G Watts; S Watts; A T Waugh; B M Waugh; M Weber; M S Weber; P Weber; A R Weidberg; P Weigell; J Weingarten; C Weiser; H Wellenstein; P S Wells; T Wenaus; D Wendland; S Wendler; Z Weng; T Wengler; S Wenig; N Wermes; M Werner; P Werner; M Werth; M Wessels; C Weydert; K Whalen; S J Wheeler-Ellis; S P Whitaker; A White; M J White; S R Whitehead; D Whiteson; D Whittington; F Wicek; D Wicke; F J Wickens; W Wiedenmann; M Wielers; P Wienemann; C Wiglesworth; L A M Wiik-Fuchs; P A Wijeratne; A Wildauer; M A Wildt; I Wilhelm; H G Wilkens; J Z Will; E Williams; H H Williams; W Willis; S Willocq; J A Wilson; M G Wilson; A Wilson; I Wingerter-Seez; S Winkelmann; F Winklmeier; M Wittgen; M W Wolter; H Wolters; W C Wong; G Wooden; B K Wosiek; J Wotschack; M J Woudstra; K W Wozniak; K Wraight; C Wright; M Wright; B Wrona; S L Wu; X Wu; Y Wu; E Wulf; R Wunstorf; B M Wynne; S Xella; M Xiao; S Xie; Y Xie; C Xu; D Xu; G Xu; B Yabsley; S Yacoob; M Yamada; H Yamaguchi; A Yamamoto; K Yamamoto; S Yamamoto; T Yamamura; T Yamanaka; J Yamaoka; T Yamazaki; Y Yamazaki; Z Yan; H Yang; U K Yang; Y Yang; Y Yang; Z Yang; S Yanush; Y Yao; Y Yasu; G V Ybeles Smit; J Ye; S Ye; M Yilmaz; R Yoosoofmiya; K Yorita; R Yoshida; C Young; S Youssef; D Yu; J Yu; J Yu; L Yuan; A Yurkewicz; B Zabinski; V G Zaets; R Zaidan; A M Zaitsev; Z Zajacova; L Zanello; A Zaytsev; C Zeitnitz; M Zeller; M Zeman; A Zemla; C Zendler; O Zenin; T Ženiš; Z Zinonos; S Zenz; D Zerwas; G Zevi Della Porta; Z Zhan; D Zhang; H Zhang; J Zhang; X Zhang; Z Zhang; L Zhao; T Zhao; Z Zhao; A Zhemchugov; S Zheng; J Zhong; B Zhou; N Zhou; Y Zhou; C G Zhu; H Zhu; J Zhu; Y Zhu; X Zhuang; V Zhuravlov; D Zieminska; R Zimmermann; S Zimmermann; S Zimmermann; M Ziolkowski; R Zitoun; L Živković; V V Zmouchko; G Zobernig; A Zoccoli; Y Zolnierowski; A Zsenei; M Zur Nedden; V Zutshi; L Zwalinski Journal: Eur Phys J C Part Fields Date: 2012-07-03 Impact factor: 4.590
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