Measurement of the branching fraction and time-dependent CP asymmetry in the decay B-0 ->(D*+D*-KS0)

doi:10.1103/PhysRevD.74.091101

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	*Measurement of the branching fraction and time-dependent CP asymmetry in the decay B-0 ->(D+D-KS0)*
	BaBar Collaboration
	2006
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.
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
学科领域	Astronomy & Astrophysics; Physics
DOI	10.1103/PhysRevD.74.091101
收录类别	SCI
语种	英语
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号	WOS:000242409700001
引用统计	被引频次：54[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ihep.ac.cn/handle/311005/212749
专题	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	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).
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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