| Study of the J/Psi decays to Lambda Lambda and Sigma(0)Sigma(0) |
| BES Callaboration
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| 2006
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发表期刊 | PHYSICS LETTERS B
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卷号 | 632期号:2--3页码:181-186 |
通讯作者 | Bian, JG (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China.
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摘要 | Using 58 million J/psi events collected by the BES-II detector at the BEPC, the decays J/psi -> Lambda Lambda and Sigma(0)Sigma(0) are analysed. The branching fractions are measured to be Br(J/psi -> Lambda Lambda) = (2.03 +/- 0.03 +/- 0.15) x 10(-3) and Br(J/psi -> Sigma(0)Sigma(0)) = (1.33 +/- 0.04 +/- 0.11) x 10(-3). The angular distribution is of the form dN/dcos theta = N-0(1 + alpha cos(2)theta), with alpha = 0.65 +/- 0.11 +/- 0.03 for J/psi -> Lambda Lambda and alpha = -0.24 +/- 0.19 +/- 0.07 for J/psi -> Sigma(0)Sigma(0). (c) 2005 Elsevier B.V. All rights reserved. |
关键词 | FINAL-STATES
BARYON
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学科领域 | Physics
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DOI | 10.1016/j.physletb.2005.10.079
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收录类别 | SCI
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语种 | 英语
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WOS类目 | Physics, Multidisciplinary
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WOS记录号 | WOS:000234727200007
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引用统计 |
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文献类型 | 期刊论文
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条目标识符 | http://ir.ihep.ac.cn/handle/311005/212637
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专题 | 实验物理中心
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作者单位 | 中国科学院高能物理研究所
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推荐引用方式 GB/T 7714 |
BES Callaboration. Study of the J/Psi decays to Lambda Lambda and Sigma(0)Sigma(0)[J]. PHYSICS LETTERS B,2006,632(2--3):181-186.
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APA |
BES Callaboration.(2006).Study of the J/Psi decays to Lambda Lambda and Sigma(0)Sigma(0).PHYSICS LETTERS B,632(2--3),181-186.
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MLA |
BES Callaboration."Study of the J/Psi decays to Lambda Lambda and Sigma(0)Sigma(0)".PHYSICS LETTERS B 632.2--3(2006):181-186.
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文件名:
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1087.pdf
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格式:
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Adobe PDF
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