Improved measurement of the 2 ν β β half-life of 136 Xe with the EXO-200 detector


Journal Article

We report on an improved measurement of the 2νββ half-life of 136Xe performed by EXO-200. The use of a large and homogeneous time-projection chamber allows for the precise estimate of the fiducial mass used for the measurement, resulting in a small systematic uncertainty. We also discuss in detail the data-analysis methods used for double-β decay searches with EXO-200, while emphasizing those directly related to the present measurement. The 136Xe 2νββ half-life is found to be T1/22νββ = 2.165±0.016(stat)±0.059(sys)×1021 yr. This is the most precisely measured half-life of any 2νββ decay to date. © 2014 American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Albert, JB; Auger, M; Auty, DJ; Barbeau, PS; Beauchamp, E; Beck, D; Belov, V; Benitez-Medina, C; Bonatt, J; Breidenbach, M; Brunner, T; Burenkov, A; Cao, GF; Chambers, C; Chaves, J; Cleveland, B; Cook, S; Craycraft, A; Daniels, T; Danilov, M; Daugherty, SJ; Davis, CG; Davis, J; Devoe, R; Delaquis, S; Dobi, A; Dolgolenko, A; Dolinski, MJ; Dunford, M; Fairbank, W; Farine, J; Feldmeier, W; Fierlinger, P; Franco, D; Fudenberg, D; Giroux, G; Gornea, R; Graham, K; Gratta, G; Hall, C; Hall, K; Hargrove, C; Herrin, S; Hughes, M; Jiang, XS; Johnson, A; Johnson, TN; Johnston, S; Karelin, A; Kaufman, LJ; Killick, R; Kravitz, S; Kuchenkov, A; Kumar, KS; Leonard, DS; Leonard, F; Licciardi, C; Maclellan, R; Marino, MG; Mong, B; Montero Díez, M; Moore, D; Nelson, R; O'Sullivan, K; Odian, A; Ostrovskiy, I; Ouellet, C; Piepke, A; Pocar, A; Prescott, CY; Rivas, A; Rowson, PC; Rozo, MP; Russell, JJ; Sabourov, A; Sinclair, D; Skarpaas, K; Slutsky, S; Stekhanov, V; Strickland, V; Tarka, M; Tolba, T; Tosi, D; Twelker, K; Vogel, P; Vuilleumier, JL; Waite, A; Walton, J; Walton, T; Weber, M; Wen, LJ; Wichoski, U; Wodin, J; Wright, JD; Yang, L; Yen, YR; Zeldovich, OY; Zhao, YB

Published Date

  • January 28, 2014

Published In

Volume / Issue

  • 89 / 1

Electronic International Standard Serial Number (EISSN)

  • 1089-490X

International Standard Serial Number (ISSN)

  • 0556-2813

Digital Object Identifier (DOI)

  • 10.1103/PhysRevC.89.015502

Citation Source

  • Scopus