Measurement of neutrino oscillation by the K2K experiment
Physical Review D - Particles, Fields, Gravitation and Cosmology 74 巻 7 号
072003-1-072003-39 頁
2006-10-12 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Measurement of neutrino oscillation by the K2K experiment
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| 作成者 |
K2K Collaboration
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| 収録物名 |
Physical Review D - Particles, Fields, Gravitation and Cosmology
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| 巻 | 74 |
| 号 | 7 |
| 開始ページ | 072003-1 |
| 終了ページ | 072003-39 |
| 抄録 |
We present measurements of νμ disappearance in K2K, the KEK to Kamioka long-baseline neutrino oscillation experiment. One-hundred and twelve beam-originated neutrino events are observed in the fiducial volume of Super-Kamiokande with an expectation of 158.1-8.6+9.2 events without oscillation. A distortion of the energy spectrum is also seen in 58 single-ring muonlike events with reconstructed energies. The probability that the observations are explained by the expectation for no neutrino oscillation is 0.0015% (4.3σ). In a two-flavor oscillation scenario, the allowed Δm2 region at sin 22θ=1 is between 1.9 and 3.5×10-3eV2 at the 90% C.L. with a best-fit value of 2.8×10-3eV2.
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
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| 発行日 | 2006-10-12 |
| 権利情報 |
Copyright (c) 2006 American Physical Society.
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1550-7998
[DOI] 10.1103/PhysRevD.74.072003
[NCID] AA00773624
[DOI] http://dx.doi.org/10.1103/PhysRevD.74.072003
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