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Improved measurement of CP asymmetries in B-0 ->(c(c)over-bar)K0((*)) decays
BaBar Collaboration
2005
发表期刊PHYSICAL REVIEW LETTERS
卷号94期号:16
通讯作者Aubert, B (reprint author), Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France.
摘要We present results on time-dependent CP asymmetries in neutral B decays to several CP eigenstates. The measurements use a data sample of about 227x10(6) Upsilon(4S)-> B (B) over bar decays collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. The amplitude of the CPasymmetry, sin2 beta in the standard model, is derived from decay-time distributions from events in which one neutral B meson is fully reconstructed in a final state containing a charmonium meson and the other B meson is determined to be either a B-0 or <<(B)over bar>(0) from its decay products. We measure sin2 beta=0.722 +/- 0.040(stat)+/- 0.023(syst) in agreement with the standard model expectation.
关键词VIOLATION
学科领域Physics
DOI10.1103/PhysRevLett.94.161803
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000228763800017
引用统计
被引频次:99[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/311005/212534
专题实验物理中心
作者单位中国科学院高能物理研究所
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BaBar Collaboration. Improved measurement of CP asymmetries in B-0 ->(c(c)over-bar)K0((*)) decays[J]. PHYSICAL REVIEW LETTERS,2005,94(16).
APA BaBar Collaboration.(2005).Improved measurement of CP asymmetries in B-0 ->(c(c)over-bar)K0((*)) decays.PHYSICAL REVIEW LETTERS,94(16).
MLA BaBar Collaboration."Improved measurement of CP asymmetries in B-0 ->(c(c)over-bar)K0((*)) decays".PHYSICAL REVIEW LETTERS 94.16(2005).
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