| Literature DB >> 32440256 |
D Felea1, J Mamuzic2, R Masełek3, N E Mavromatos4, V A Mitsou2, J L Pinfold5, R Ruiz de Austri2, K Sakurai3, A Santra2, O Vives2,6.
Abstract
We present a study on the possibility of searching for long-lived supersymmetric partners with the MoEDAL experiment at the LHC. MoEDAL is sensitive to highly ionising objects such as magnetic monopoles or massive (meta)stable electrically charged particles. We focus on prospects of directly detecting long-lived sleptons in a phenomenologically realistic model which involves an intermediate neutral long-lived particle in the decay chain. This scenario is not yet excluded by the current data from ATLAS or CMS, and is compatible with astrophysical constraints. Using Monte Carlo simulation, we compare the sensitivities of MoEDAL versus ATLAS in scenarios where MoEDAL could provide discovery reach complementary to ATLAS and CMS, thanks to looser selection criteria combined with the virtual absence of background. It is also interesting to point out that, in such scenarios, in which charged staus are the main long-lived candidates, the relevant mass range for MoEDAL is compatible with a potential role of Supersymmetry in providing an explanation for the anomalous events observed by the ANITA detector.Entities:
Year: 2020 PMID: 32440256 PMCID: PMC7231802 DOI: 10.1140/epjc/s10052-020-7994-7
Source DB: PubMed Journal: Eur Phys J C Part Fields ISSN: 1434-6044 Impact factor: 4.590
Fig. 1Stau velocity distributions for direct production in 13 TeV pp collisions for masses between 200 GeV and 2 TeV
Fig. 2The cross sections for pair production at the 13 TeV LHC of staus (blue) and higgsinos (magenta) at NLO + NLL level and for gluinos (red) at NLLO + NNLL precision taken from Ref. [72]
Fig. 3Comparison of velocity distributions between staus, higgsinos and gluinos of the same mass () produced directly in pairs in 13 TeV pp collisions
Fig. 4The Run-2 NTD deployment of MoEDAL. NTD modules are depicted as thin blue plates with orange edges. The red point at the centre represents the interaction point. The z-axis is along the beams and the y-axis indicates the vertical direction
Fig. 5The distribution of the incidence angle between the and an NTD panel assuming the Run-2 NTD geometry
Fig. 6The sensitivity of MoEDAL, (solid) and (dashed), in the vs. plane for the production followed by , . We fix the mass splitting as and . Two NTD geometries are considered: the Run-2 discussed in the text (red) and an ideal geometry with all NTD panels facing the interaction point (blue). The region below the dotted yellow contour is excluded by the current ATLAS HSCP analysis with [52], while the dotted orange contour represents the projection of this analysis to Run-3 luminosity . For MoEDAL is assumed for Run-3