Measurement of the double-β decay half-life of 136Xe with the KamLAND-Zen experiment


Journal Article

We present results from the KamLAND-Zen double-beta decay experiment based on an exposure of 77.6 days with 129 kg of 136Xe. The measured two-neutrino double-beta decay half-life of 136Xe is T1/22ν=2.38±0.02(stat) ±0.14(syst)×1021 yr, consistent with a recent measurement by EXO-200. We also obtain a lower limit for the neutrinoless double-beta decay half-life, T1/20ν>5.7×1024 yr at 90% confidence level (C. L.), which corresponds to almost a fivefold improvement over previous limits. © 2012 American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Gando, A; Gando, Y; Hanakago, H; Ikeda, H; Inoue, K; Kato, R; Koga, M; Matsuda, S; Mitsui, T; Nakada, T; Nakamura, K; Obata, A; Oki, A; Ono, Y; Shimizu, I; Shirai, J; Suzuki, A; Takemoto, Y; Tamae, K; Ueshima, K; Watanabe, H; Xu, BD; Yamada, S; Yoshida, H; Kozlov, A; Yoshida, S; Banks, TI; Detwiler, JA; Freedman, SJ; Fujikawa, BK; Han, K; O'Donnell, T; Berger, BE; Efremenko, Y; Karwowski, HJ; Markoff, DM; Tornow, W; Enomoto, S; Decowski, MP

Published Date

  • April 19, 2012

Published In

Volume / Issue

  • 85 / 4

Electronic International Standard Serial Number (EISSN)

  • 1089-490X

International Standard Serial Number (ISSN)

  • 0556-2813

Digital Object Identifier (DOI)

  • 10.1103/PhysRevC.85.045504

Citation Source

  • Scopus