Measurement of CP-violating parameters in B -> eta ' K decays | |
Belle Collaboration | |
刊名 | PHYSICS LETTERS B
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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. |
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