Observation of two-neutrino double-beta decay in 136Xe with the EXO-200 detector.
Journal Article (Journal Article)
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.
Full Text
Duke Authors
Cited Authors
- Ackerman, N; Aharmim, B; Auger, M; Auty, DJ; Barbeau, PS; Barry, K; Bartoszek, L; Beauchamp, E; Belov, V; Benitez-Medina, C; Breidenbach, M; Burenkov, A; Cleveland, B; Conley, R; Conti, E; Cook, J; Cook, S; Coppens, A; Counts, I; Craddock, W; Daniels, T; Danilov, MV; Davis, CG; Davis, J; deVoe, R; Djurcic, Z; Dobi, A; Dolgolenko, AG; Dolinski, MJ; Donato, K; Dunford, M; Fairbank, W; Farine, J; Fierlinger, P; Franco, D; Freytag, D; Giroux, G; Gornea, R; Graham, K; Gratta, G; Green, MP; Hägemann, C; Hall, C; Hall, K; Haller, G; Hargrove, C; Herbst, R; Herrin, S; Hodgson, J; Hughes, M; Johnson, A; Karelin, A; Kaufman, LJ; Koffas, T; Kuchenkov, A; Kumar, A; Kumar, KS; Leonard, DS; Leonard, F; LePort, F; Mackay, D; MacLellan, R; Marino, M; Martin, Y; Mong, B; Díez, MM; Morgan, P; Müller, AR; Neilson, R; Nelson, R; Odian, A; O'Sullivan, K; Ouellet, C; Piepke, A; Pocar, A; Prescott, CY; Pushkin, K; Rivas, A; Rollin, E; Rowson, PC; Russell, JJ; Sabourov, A; Sinclair, D; Skarpaas, K; Slutsky, S; Stekhanov, V; Strickland, V; Swift, M; Tosi, D; Twelker, K; Vogel, P; Vuilleumier, J-L; Vuilleumier, J-M; Waite, A; Waldman, S; Walton, T; Wamba, K; Weber, M; Wichoski, U; Wodin, J; Wright, JD; Yang, L; Yen, Y-R; Zeldovich, OY; EXO Collaboration,
Published Date
- November 2011
Published In
Volume / Issue
- 107 / 21
Start / End Page
- 212501 -
PubMed ID
- 22181874
Electronic International Standard Serial Number (EISSN)
- 1079-7114
International Standard Serial Number (ISSN)
- 0031-9007
Digital Object Identifier (DOI)
- 10.1103/physrevlett.107.212501
Language
- eng