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Study of CP-violating asymmetries in B(0)->pi(+)pi(-) decays

文献类型:期刊论文

作者Belle Collaboration
刊名PHYSICAL REVIEW LETTERS
出版日期2002
卷号89期号:7
关键词B-DECAYS MESON SYSTEM B->PI-PI QCD
通讯作者Abe, K (reprint author), KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan.
英文摘要We present a measurement of CP-violating asymmetries in B(0)-->pi(+)pi(-) decays based on a 41.8 fb(-1) data sample collected at the Y(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)-->pi(+)pi(-) CP eigenstate and identify the flavor of the accompanying B meson from its decay products. From the asymmetry in the distribution of the time intervals between the two B meson decay points, we obtain the CP-violating asymmetry parameters S(pipi)=-1.21(-0.27)(+0.38)(stat)(-0.13)(+0.16)(syst) and A(pipi)=+0.94(-0.31)(+0.25)(stat)+/-0.09(syst).
学科主题Physics
类目[WOS]Physics, Multidisciplinary
收录类别SCI
语种英语
WOS记录号WOS:000177200100005
公开日期2016-02-26
源URL[http://ir.ihep.ac.cn/handle/311005/212221]  
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. Study of CP-violating asymmetries in B(0)->pi(+)pi(-) decays[J]. PHYSICAL REVIEW LETTERS,2002,89(7).
APA Belle Collaboration.(2002).Study of CP-violating asymmetries in B(0)->pi(+)pi(-) decays.PHYSICAL REVIEW LETTERS,89(7).
MLA Belle Collaboration."Study of CP-violating asymmetries in B(0)->pi(+)pi(-) decays".PHYSICAL REVIEW LETTERS 89.7(2002).

入库方式: OAI收割

来源:高能物理研究所

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