Measurement of CP-violating parameters in B -> eta ' K decays

	Measurement of CP-violating parameters in B -> eta ' K decays
	Belle Collaboration
刊名	PHYSICS LETTERS B
	2002
卷号	546 期号:3--4 页码:196-205
关键词	MESON DECAYS SEARCH ASYMMETRIES SYSTEM
通讯作者	Chen, KF (reprint author), Natl Taiwan Univ, Taipei 10764, Taiwan.
英文摘要	We present measurements of CP-violating parameters in B-0 ((B) over bar (0)) --> eta'K-S(0) and B+/- --> eta'K+/- decays based on a 41.8 fb(-1) data sample collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We fully reconstruct one neutral B meson as a B-0((B) over bar (0)) --> eta'K-S(0) CP eigenstate and identify the flavor of the accompanying B from its decay products. From the distribution of proper time intervals between pairs of B meson decay points, we obtain the CP-violating asymmetry parameters S-eta'KS(0) = 0.28+/-0.55(stat)(-0.08)(+0.07)(syst), and A(eta'KS)(0) = 0.13+/-0.32(stat)(-0.06)(+0.09)(syst). We also reconstruct charged B+/- --> eta'K+/- decays and determine a direct- CP-violating asymmetry value of A(eta'K)(+/-) = (-1.5+/-7.0(stat) +/- 0.9(syst))%. (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:000178848400002
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/212245]
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. Measurement of CP-violating parameters in B -> eta ' K decays[J]. PHYSICS LETTERS B,2002,546(3--4):196-205.
APA	Belle Collaboration.(2002).Measurement of CP-violating parameters in B -> eta ' K decays.PHYSICS LETTERS B,546(3--4),196-205.
MLA	Belle Collaboration."Measurement of CP-violating parameters in B -> eta ' K decays".PHYSICS LETTERS B 546.3--4(2002):196-205.