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
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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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