Literature DB >> 22181874

Observation of two-neutrino double-beta decay in 136Xe with the EXO-200 detector.

N Ackerman1, B Aharmim, M Auger, D J Auty, P S Barbeau, K Barry, L Bartoszek, E Beauchamp, V Belov, C Benitez-Medina, M Breidenbach, A Burenkov, B Cleveland, R Conley, E Conti, J Cook, S Cook, A Coppens, I Counts, W Craddock, T Daniels, M V Danilov, C G Davis, J Davis, R deVoe, Z Djurcic, A Dobi, A G Dolgolenko, M J Dolinski, K Donato, M Dunford, W Fairbank, J Farine, P Fierlinger, D Franco, D Freytag, G Giroux, R Gornea, K Graham, G Gratta, M P Green, C Hägemann, C Hall, K Hall, G Haller, C Hargrove, R Herbst, S Herrin, J Hodgson, M Hughes, A Johnson, A Karelin, L J Kaufman, T Koffas, A Kuchenkov, A Kumar, K S Kumar, D S Leonard, F Leonard, F LePort, D Mackay, R MacLellan, M Marino, Y Martin, B Mong, M Montero Díez, P Morgan, A R Müller, R Neilson, R Nelson, A Odian, K O'Sullivan, C Ouellet, A Piepke, A Pocar, C Y Prescott, K Pushkin, A Rivas, E Rollin, P C Rowson, J J Russell, A Sabourov, D Sinclair, K Skarpaas, S Slutsky, V Stekhanov, V Strickland, M Swift, D Tosi, K Twelker, P Vogel, J-L Vuilleumier, J-M Vuilleumier, A Waite, S Waldman, T Walton, K Wamba, M Weber, U Wichoski, J Wodin, J D Wright, L Yang, Y-R Yen, O Ya Zeldovich.   

Abstract

We report the observation of two-neutrino double-beta decay in (136)Xe with T(1/2) = 2.11 ± 0.04(stat) ± 0.21(syst) × 10(21) yr. This second-order process, predicted by the standard model, has been observed for several nuclei but not for (136)Xe. The observed decay rate provides new input to matrix element calculations and to the search for the more interesting neutrinoless double-beta decay, the most sensitive probe for the existence of Majorana particles and the measurement of the neutrino mass scale.

Year:  2011        PMID: 22181874     DOI: 10.1103/PhysRevLett.107.212501

Source DB:  PubMed          Journal:  Phys Rev Lett        ISSN: 0031-9007            Impact factor:   9.161


  2 in total

1.  Search for Majorana neutrinos with the first two years of EXO-200 data.

Authors: 
Journal:  Nature       Date:  2014-06-04       Impact factor: 49.962

2.  Development and Characterization of a High Sensitivity Segmented Fast Neutron Spectrometer (FaNS-2).

Authors:  T J Langford; E J Beise; H Breuer; C R Heimbach; G Ji; J S Nico
Journal:  J Instrum       Date:  2016-01-15       Impact factor: 1.415

  2 in total

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