Limit on neutrinoless ββ decay of Xe136 from the first phase of KamLAND-Zen and comparison with the positive claim in Ge76

A. Gando; Y. Gando; H. Hanakago; H. Ikeda; K. Inoue; K. Ishidoshiro; R. Kato; M. Koga; S. Matsuda; T. Mitsui; D. Motoki; T. Nakada; K. Nakamura; A. Obata; A. Oki; Y. Ono; M. Otani; 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; S. J. Freedman; B. K. Fujikawa; K. Han; T. O'Donnell; B. E. Berger; Y. Efremenko; H. J. Karwowski; D. M. Markoff; W. Tornow; J. A. Detwiler; S. Enomoto; M. P. Decowski

doi:10.1103/PhysRevLett.110.062502

Limit on neutrinoless ββ decay of Xe136 from the first phase of KamLAND-Zen and comparison with the positive claim in Ge76

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

Research Center for Neutrino Science (RCNS)

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402 Citations (Scopus)

Abstract

We present results from the first phase of the KamLAND-Zen double-beta decay experiment, corresponding to an exposure of 89.5 kg yr of Xe136. We obtain a lower limit for the neutrinoless double-beta decay half-life of T1/20ν>1.9×1025 yr at 90% C.L. The combined results from KamLAND-Zen and EXO-200 give T1/20ν>3.4×1025 yr at 90% C.L., which corresponds to a Majorana neutrino mass limit of m_ββ <(120-250) meV based on a representative range of available matrix element calculations. Using those calculations, this result excludes the Majorana neutrino mass range expected from the neutrinoless double-beta decay detection claim in Ge76, reported by a part of the Heidelberg-Moscow Collaboration, at more than 97.5% C.L.

Original language	English
Article number	062502
Journal	Physical review letters
Volume	110
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.110.062502
Publication status	Published - 2013 Feb 7

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.110.062502

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Gando, A., Gando, Y., Hanakago, H., Ikeda, H., Inoue, K., Ishidoshiro, K., Kato, R., Koga, M., Matsuda, S., Mitsui, T., Motoki, D., Nakada, T., Nakamura, K., Obata, A., Oki, A., Ono, Y., Otani, M., Shimizu, I., Shirai, J., ... Decowski, M. P. (2013). Limit on neutrinoless ββ decay of Xe136 from the first phase of KamLAND-Zen and comparison with the positive claim in Ge76. Physical review letters, 110(6), [062502]. https://doi.org/10.1103/PhysRevLett.110.062502

Gando, A, Gando, Y, Hanakago, H, Ikeda, H , Inoue, K , Ishidoshiro, K, Kato, R, Koga, M, Matsuda, S, Mitsui, T, Motoki, D, Nakada, T, Nakamura, K, Obata, A, Oki, A, Ono, Y, Otani, M, 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, Freedman, SJ, Fujikawa, BK, Han, K, O'Donnell, T, Berger, BE, Efremenko, Y, Karwowski, HJ, Markoff, DM, Tornow, W, Detwiler, JA, Enomoto, S & Decowski, MP 2013, 'Limit on neutrinoless ββ decay of Xe136 from the first phase of KamLAND-Zen and comparison with the positive claim in Ge76', Physical review letters, vol. 110, no. 6, 062502. https://doi.org/10.1103/PhysRevLett.110.062502

@article{d7c0b054aca246b5a30ba8a32e9f33ae,

title = "Limit on neutrinoless ββ decay of Xe136 from the first phase of KamLAND-Zen and comparison with the positive claim in Ge76",

abstract = "We present results from the first phase of the KamLAND-Zen double-beta decay experiment, corresponding to an exposure of 89.5 kg yr of Xe136. We obtain a lower limit for the neutrinoless double-beta decay half-life of T1/20ν>1.9×1025 yr at 90% C.L. The combined results from KamLAND-Zen and EXO-200 give T1/20ν>3.4×1025 yr at 90% C.L., which corresponds to a Majorana neutrino mass limit of mββ <(120-250) meV based on a representative range of available matrix element calculations. Using those calculations, this result excludes the Majorana neutrino mass range expected from the neutrinoless double-beta decay detection claim in Ge76, reported by a part of the Heidelberg-Moscow Collaboration, at more than 97.5% C.L.",

author = "A. Gando and Y. Gando and H. Hanakago and H. Ikeda and K. Inoue and K. Ishidoshiro and R. Kato and M. Koga and S. Matsuda and T. Mitsui and D. Motoki and T. Nakada and K. Nakamura and A. Obata and A. Oki and Y. Ono and M. Otani 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 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 Detwiler, {J. A.} and S. Enomoto and Decowski, {M. P.}",

year = "2013",

month = feb,

day = "7",

doi = "10.1103/PhysRevLett.110.062502",

language = "English",

volume = "110",

journal = "Physical Review Letters",

issn = "0031-9007",

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T1 - Limit on neutrinoless ββ decay of Xe136 from the first phase of KamLAND-Zen and comparison with the positive claim in Ge76

AU - Gando, A.

AU - Gando, Y.

AU - Hanakago, H.

AU - Ikeda, H.

AU - Inoue, K.

AU - Ishidoshiro, K.

AU - Kato, R.

AU - Koga, M.

AU - Matsuda, S.

AU - Mitsui, T.

AU - Motoki, D.

AU - Nakada, T.

AU - Nakamura, K.

AU - Obata, A.

AU - Oki, A.

AU - Ono, Y.

AU - Otani, M.

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 - 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 - Detwiler, J. A.

AU - Enomoto, S.

AU - Decowski, M. P.

PY - 2013/2/7

Y1 - 2013/2/7

N2 - We present results from the first phase of the KamLAND-Zen double-beta decay experiment, corresponding to an exposure of 89.5 kg yr of Xe136. We obtain a lower limit for the neutrinoless double-beta decay half-life of T1/20ν>1.9×1025 yr at 90% C.L. The combined results from KamLAND-Zen and EXO-200 give T1/20ν>3.4×1025 yr at 90% C.L., which corresponds to a Majorana neutrino mass limit of mββ <(120-250) meV based on a representative range of available matrix element calculations. Using those calculations, this result excludes the Majorana neutrino mass range expected from the neutrinoless double-beta decay detection claim in Ge76, reported by a part of the Heidelberg-Moscow Collaboration, at more than 97.5% C.L.

AB - We present results from the first phase of the KamLAND-Zen double-beta decay experiment, corresponding to an exposure of 89.5 kg yr of Xe136. We obtain a lower limit for the neutrinoless double-beta decay half-life of T1/20ν>1.9×1025 yr at 90% C.L. The combined results from KamLAND-Zen and EXO-200 give T1/20ν>3.4×1025 yr at 90% C.L., which corresponds to a Majorana neutrino mass limit of mββ <(120-250) meV based on a representative range of available matrix element calculations. Using those calculations, this result excludes the Majorana neutrino mass range expected from the neutrinoless double-beta decay detection claim in Ge76, reported by a part of the Heidelberg-Moscow Collaboration, at more than 97.5% C.L.

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U2 - 10.1103/PhysRevLett.110.062502

DO - 10.1103/PhysRevLett.110.062502

M3 - Article

AN - SCOPUS:84873422235

SN - 0031-9007

VL - 110

JO - Physical Review Letters

JF - Physical Review Letters

IS - 6

M1 - 062502

ER -

Limit on neutrinoless ββ decay of Xe136 from the first phase of KamLAND-Zen and comparison with the positive claim in Ge76

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