Measurements of branching fractions and decay amplitudes in B -> J/psi K* decays

	*Measurements of branching fractions and decay amplitudes in B -> J/psi K decays**
	Belle Collaboration
刊名	PHYSICS LETTERS B
	2002
卷号	538 期号:1--2 页码:11-20
通讯作者	Abe, K (reprint author), KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan.
英文摘要	The branching fractions and the decay amplitudes of B --> J/psiK* decays are measured in a 29.4 fb(-1) data sample collected with the Belle detector at the KEKB electron-positron collider. The decay amplitudes of helicity states of the J/psiK* system are determined from the full angular distribution of the final state particles in the transversity basis. The branching fractions are measured to be (1.29 +/- 0.05 +/- 0.13) x 10(-3) for neutral mesons and (1.28 +/- 0.07 +/- 0.14) x 10(-3) for charged mesons. The measured longitudinal and transverse (perpendicular to the transversity plane) amplitudes are \A(0)\(2) = 0.62 +/- 0.02 +/- 0.03 and \A(perpendicular to)\(2) = 0.19 +/- 0.02 +/- 0.03, respectively. The value of \A(perpendicular to)\(2) shows that the CP even component dominates in the B(0) --> J/psiK*(0)(K(S)pi(0)) decay. (C) 2002 Elsevier Science B.V. All rights reserved.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000176725100003
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/212215]
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. Measurements of branching fractions and decay amplitudes in B -> J/psi K* decays[J]. PHYSICS LETTERS B,2002,538(1--2):11-20.
APA	Belle Collaboration.(2002).Measurements of branching fractions and decay amplitudes in B -> J/psi K* decays.PHYSICS LETTERS B,538(1--2),11-20.
MLA	Belle Collaboration."Measurements of branching fractions and decay amplitudes in B -> J/psi K* decays".PHYSICS LETTERS B 538.1--2(2002):11-20.