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| ファイル | 記述 | サイズ | フォーマット | |
|---|---|---|---|---|
| PhysRevLett.124.161802.pdf | 286.28 kB | Adobe PDF | 見る/開く |
| タイトル: | Search for Electron Antineutrino Appearance in a Long-Baseline Muon Antineutrino Beam |
| 著者: | Ali, A. Ashida, Y. Ban, S. Hayashino, T. Hiramoto, A. Ichikawa, A. K. Jiang, M. Kikawa, T. Kubo, H. Kuribayashi, S. Nakamura, K. G. Nakaya, T. Odagawa, T. Tajima, M. Uno, W. Wendell, R. Yasutome, K. The T2K Collaboration |
| 著者名の別形: | 市川, 温子 木河, 達也 中家, 剛 |
| 発行日: | 24-Apr-2020 |
| 出版者: | American Physical Society (APS) |
| 誌名: | Physical Review Letters |
| 巻: | 124 |
| 号: | 16 |
| 論文番号: | 161802 |
| 抄録: | Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. T2K observes 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40σ and no discrepancy between data and PMNS predictions is found. A complementary analysis that introduces an additional free parameter which allows non-PMNS values of electron neutrino and antineutrino appearance also finds no discrepancy between data and PMNS predictions. |
| 著作権等: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. |
| URI: | http://hdl.handle.net/2433/250784 |
| DOI(出版社版): | 10.1103/PhysRevLett.124.161802 |
| PubMed ID: | 32383902 |
| 出現コレクション: | 学術雑誌掲載論文等 |
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