Results from KamLAND-Zen

K. Asakura, A. Gando, Y. Gando, T. Hachiya, S. Hayashida, H. Ikeda, K. Inoue, K. Ishidoshiro, T. Ishikawa, S. Ishio, M. Koga, R. Matsuda, S. Matsuda, T. Mitsui, D. Motoki, K. Nakamura, S. Obara, Y. Oki, M. Otani, T. OuraI. Shimizu, Y. Shirahata, J. Shirai, A. Suzuki, H. Tachibana, K. Tamae, K. Ueshima, H. Watanabe, B. D. Xu, Y. Yamauchi, H. Yoshida, A. Kozlov, Y. Takemoto, S. Yoshida, K. Fushimi, T. I. Banks, S. J. Freedman, B. K. Fujikawa, T. O'donnell, L. A. Winslow, B. E. Berger, Y. Efremenko, H. J. Karwowski, D. M. Markoff, W. Tornow, J. A. Detwiler, S. Enomoto, M. P. Decowski

研究成果: 書籍の章/レポート/Proceedings会議への寄与査読

33 被引用数 (Scopus)

抄録

KamLAND-Zen reports on a preliminary search for neutrinoless double-beta decay with 136Xe based on 114.8 live-days after the purification of the xenon loaded liquid scintillator. In this data, the problematic 110mAg background peak identified in previous searches is reduced by more than a factor of 10. By combining the KamLAND-Zen pre- and post-purification data, we obtain a preliminary lower limit on the 0νββ decay half-life of T1/20ν>2.6×1025 yr at 90% C.L. The search sensitivity will be enhanced with additional low background data after the purification. Prospects for further improvements with future KamLAND-Zen upgrades are also presented.

本文言語英語
ホスト出版物のタイトルXXVI International Conference on Neutrino Physics and Astrophysics, Neutrino 2014
編集者Ed Kearns, Gary Feldman
出版社American Institute of Physics Inc.
ISBN(電子版)9780735413139
DOI
出版ステータス出版済み - 2015 7月 15
イベント26th International Conference on Neutrino Physics and Astrophysics, Neutrino 2014 - Boston, 米国
継続期間: 2014 6月 22014 6月 7

出版物シリーズ

名前AIP Conference Proceedings
1666
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

会議

会議26th International Conference on Neutrino Physics and Astrophysics, Neutrino 2014
国/地域米国
CityBoston
Period14/6/214/6/7

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