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

A. Gando; Y. Gando; H. Hanakago; H. Ikeda; K. Inoue; R. Kato; M. Koga; S. Matsuda; T. Mitsui; T. Nakada; K. Nakamura; A. Obata; A. Oki; Y. Ono; I. Shimizu; J. Shirai; A. Suzuki; Y. Takemoto; K. Tamae; K. Ueshima; H. Watanabe; B. D. Xu; S. Yamada; H. Yoshida; A. Kozlov; S. Yoshida; T. I. Banks; J. A. Detwiler; S. J. Freedman; B. K. Fujikawa; K. Han; T. O'Donnell; B. E. Berger; Y. Efremenko; H. J. Karwowski; D. M. Markoff; W. Tornow; S. Enomoto; M. P. Decowski

doi:10.1103/PhysRevC.85.045504

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

A. Gando, Y. Gando, H. Hanakago, H. Ikeda, K. Inoue, R. Kato, M. Koga, S. Matsuda, T. Mitsui, T. Nakada, K. Nakamura, A. Obata, A. Oki, Y. Ono, I. Shimizu, J. Shirai, A. Suzuki, Y. Takemoto, K. Tamae, K. UeshimaH. Watanabe, B. D. Xu, S. Yamada, H. Yoshida, A. Kozlov, S. Yoshida, T. I. Banks, J. A. Detwiler, S. J. Freedman, B. K. Fujikawa, K. Han, T. O'Donnell, B. E. Berger, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, S. Enomoto, M. P. Decowski

Research Center for Neutrino Science (RCNS)

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205 Citations (Scopus)

Abstract

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.

Original language	English
Article number	045504
Journal	Physical Review C - Nuclear Physics
Volume	85
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.85.045504
Publication status	Published - 2012 Apr 19

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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., ... Decowski, M. P. (2012). Measurement of the double-β decay half-life of 136Xe with the KamLAND-Zen experiment. Physical Review C - Nuclear Physics, 85(4), Article 045504. https://doi.org/10.1103/PhysRevC.85.045504

@article{35c43d0dbb7b46f38f09a436301879ba,

title = "Measurement of the double-β decay half-life of 136Xe with the KamLAND-Zen experiment",

abstract = "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.",

author = "A. Gando and Y. Gando and H. Hanakago and H. Ikeda and K. Inoue and R. Kato and M. Koga and S. Matsuda and T. Mitsui and T. Nakada and K. Nakamura and A. Obata and A. Oki and Y. Ono and I. Shimizu and J. Shirai and A. Suzuki and Y. Takemoto and K. Tamae and K. Ueshima and H. Watanabe and Xu, {B. D.} and S. Yamada and H. Yoshida and A. Kozlov and S. Yoshida and Banks, {T. I.} and Detwiler, {J. A.} and Freedman, {S. J.} and Fujikawa, {B. K.} and K. Han and T. O'Donnell and Berger, {B. E.} and Y. Efremenko and Karwowski, {H. J.} and Markoff, {D. M.} and W. Tornow and S. Enomoto and Decowski, {M. P.}",

year = "2012",

month = apr,

day = "19",

doi = "10.1103/PhysRevC.85.045504",

language = "English",

volume = "85",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "4",

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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 2012, 'Measurement of the double-β decay half-life of 136Xe with the KamLAND-Zen experiment', Physical Review C - Nuclear Physics, vol. 85, no. 4, 045504. https://doi.org/10.1103/PhysRevC.85.045504

TY - JOUR

T1 - Measurement of the double-β decay half-life of 136Xe with the KamLAND-Zen experiment

AU - Gando, A.

AU - Gando, Y.

AU - Hanakago, H.

AU - Ikeda, H.

AU - Inoue, K.

AU - Kato, R.

AU - Koga, M.

AU - Matsuda, S.

AU - Mitsui, T.

AU - Nakada, T.

AU - Nakamura, K.

AU - Obata, A.

AU - Oki, A.

AU - Ono, Y.

AU - Shimizu, I.

AU - Shirai, J.

AU - Suzuki, A.

AU - Takemoto, Y.

AU - Tamae, K.

AU - Ueshima, K.

AU - Watanabe, H.

AU - Xu, B. D.

AU - Yamada, S.

AU - Yoshida, H.

AU - Kozlov, A.

AU - Yoshida, S.

AU - Banks, T. I.

AU - Detwiler, J. A.

AU - Freedman, S. J.

AU - Fujikawa, B. K.

AU - Han, K.

AU - O'Donnell, T.

AU - Berger, B. E.

AU - Efremenko, Y.

AU - Karwowski, H. J.

AU - Markoff, D. M.

AU - Tornow, W.

AU - Enomoto, S.

AU - Decowski, M. P.

PY - 2012/4/19

Y1 - 2012/4/19

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84859962715&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84859962715&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.85.045504

DO - 10.1103/PhysRevC.85.045504

M3 - Article

AN - SCOPUS:84859962715

SN - 0556-2813

VL - 85

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 045504

ER -

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

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