Measurement of the quasielastic axial vector mass in neutrino interactions on oxygen
Physical Review D - Particles, Fields, Gravitation and Cosmology 74 巻 5 号
052002-1-052002-15 頁
2006-09-13 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Measurement of the quasielastic axial vector mass in neutrino interactions on oxygen
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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 | 5 |
| 開始ページ | 052002-1 |
| 終了ページ | 052002-15 |
| 抄録 |
The weak nucleon axial-vector form factor for quasielastic interactions is determined using neutrino interaction data from the K2K Scintillating Fiber detector in the neutrino beam at KEK. More than 12000 events are analyzed, of which half are charged-current quasielastic interactions νμn→μ-p occurring primarily in oxygen nuclei. We use a relativistic Fermi gas model for oxygen and assume the form factor is approximately a dipole with one parameter, the axial-vector mass MA, and fit to the shape of the distribution of the square of the momentum transfer from the nucleon to the nucleus. Our best fit result for MA=1.20±0.12GeV. Furthermore, this analysis includes updated vector form factors from recent electron scattering experiments and a discussion of the effects of the nucleon momentum on the shape of the fitted distributions.
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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 | 2006-09-13 |
| 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.74.052002
[NCID] AA00773624
[DOI] http://dx.doi.org/10.1103/PhysRevD.74.052002
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