| Measurement of the branching fraction and time-dependent CP asymmetry in the decay B-0 ->(D*+D*-KS0) |
| BaBar Collaboration
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| 2006
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| 发表期刊 | PHYSICAL REVIEW D
 |
| 卷号 | 74期号:9 |
| 通讯作者 | Aubert, B (reprint author), IN2P3, Lab Phys Particules, CNRS, Anncey Le Vieux, France.
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| 摘要 | We study the decay B-0 ->(D*+D*-KS0) using (230 +/- 2)x10(6)B (B) over bar pairs collected by the BABAR detector at the PEP-II B factory. We measure a branching fraction B(B-0 ->(D*+D*-KS0))=(4.4 +/- 0.4 +/- 0.7)x10(-3) and find evidence for the decay B-0 -> D*-Ds1+(2536) with a significance of 4.6 sigma. A time-dependent CP asymmetry analysis is also performed to study the possible resonant contributions to B-0 ->(D*+D*-KS0) and the sign of cos2 beta. Our measurement indicates that there is a sizable resonant contribution to the decay B-0 ->(D*+D*-KS0) from an unknown D-s1(+) state with large width, and that cos2 beta is positive at the 94% confidence level under certain theoretical assumptions. |
| 关键词 | MESONS
QUARK
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| 学科领域 | Astronomy & Astrophysics; Physics
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| DOI | 10.1103/PhysRevD.74.091101
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| 收录类别 | SCI
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| 语种 | 英语
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| WOS类目 | Astronomy & Astrophysics
; Physics, Particles & Fields
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| WOS记录号 | WOS:000242409700001
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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/311005/212749
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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 |
BaBar Collaboration. Measurement of the branching fraction and time-dependent CP asymmetry in the decay B-0 ->(D*+D*-KS0)[J]. PHYSICAL REVIEW D,2006,74(9).
|
| APA |
BaBar Collaboration.(2006).Measurement of the branching fraction and time-dependent CP asymmetry in the decay B-0 ->(D*+D*-KS0).PHYSICAL REVIEW D,74(9).
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| MLA |
BaBar Collaboration."Measurement of the branching fraction and time-dependent CP asymmetry in the decay B-0 ->(D*+D*-KS0)".PHYSICAL REVIEW D 74.9(2006).
|
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