Observation of B+-> p(-)Lambda gamma
文献类型：期刊论文
| 作者 | Belle Collaboration |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2005 |
| 卷号 | 95期号:6 |
| 关键词 | BARYONIC B-DECAYS SEARCH PHYSICS |
| 通讯作者 | Lee, YJ (reprint author), Natl Taiwan Univ, Dept Phys, Taipei, Taiwan. |
| 英文摘要 | We report the first observation of the radiative hyperonic B decay B+ -> p Lambda gamma using a 140 fb(-1) data sample recorded on the Y(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. The measured branching fraction is B(B+ -> p Lambda gamma) 2:16 (+0.58)(-0:53) +/- 0:20) x 10(-6). We examine its Mp(Lambda) distribution and observe a peak near threshold. This feature is expected by the short-distance b -> s gamma transition. A search for B+ -> p Sigma(0)gamma yields no significant signal, and we set a 90% confidence level upper limit on the branching fraction of B(B+ -> p Sigma(0)gamma) < 4: 6 x 10(-6). |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000231017700014 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212578]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Belle Collaboration. Observation of B+-> p(-)Lambda gamma[J]. PHYSICAL REVIEW LETTERS,2005,95(6). |
| APA | Belle Collaboration.(2005).Observation of B+-> p(-)Lambda gamma.PHYSICAL REVIEW LETTERS,95(6). |
| MLA | Belle Collaboration."Observation of B+-> p(-)Lambda gamma".PHYSICAL REVIEW LETTERS 95.6(2005). |
入库方式： OAI收割
来源：高能物理研究所
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