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题名: CP violating phase gamma from a global fit of rare charmless hadronic B decays
作者: He, XG ;  Hsiao, YK ;  Shi, JQ ;  Wu, YL ;  Zhou, YF
刊名: PHYSICAL REVIEW D
出版日期: 2001
卷号: 64, 期号:3, 页码:-
关键词: CKM ANGLE-GAMMA ;  PI-K DECAYS ;  ELECTROWEAK PENGUIN ;  LEADING LOGARITHMS ;  MESON DECAYS ;  UNITARITY TRIANGLE ;  2 PSEUDOSCALARS ;  QCD CORRECTIONS ;  B->K-PI DECAYS ;  SU(3) SYMMETRY
学科分类: Physics
通讯作者: He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan.
部门归属: Natl Taiwan Univ, Dept Phys, Taipei, Taiwan; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: We study the constraints on the CP violating phase gamma in the Kobayashi-Maskawa model using available experimental data. We first follow the conventional method to update the constraint on gamma by performing a chi (2) analysis using data from \epsilon (K)\, Deltam(Bd,s), and \V-ub\V-cb\. We also include the recent information on sin 2 beta in the analysis. We obtain the best fit for gamma to be 66 degrees and the 95% C.L. allowed range to be 42 degrees -87 degrees. We then develop a method to carry out a chi (2) analysis based on SU(3) symmetry using data from B-->pi pi and B -->K pi. We also discuss SU(3) breaking effects from a model estimate. We find that the present data on B -->pi pi ,K pi can also give some constraint on gamma although weaker than the earlier method limited by the present experimental errors. Future improved data will provide a more stringent constraint. Finally we perform a combined fit using data from \epsilon (K)/, Delta mB(d,s)' \V-ub/V-cb\, sin 2 beta, and rare charmless hadronic B decays. The combined analysis gives gamma =67 degrees for the best-fit value and 43 degrees -87 degrees as the 95% C.L. allowed range. Several comments on other methods to determine gamma based on SU(3) symmetry are also provided.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000170265300012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13697
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
He, XG,Hsiao, YK,Shi, JQ,et al. CP violating phase gamma from a global fit of rare charmless hadronic B decays[J]. PHYSICAL REVIEW D,2001,64(3):-.
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