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CP violating phase gamma from a global fit of rare charmless hadronic B decays
He, XG; Hsiao, YK; Shi, JQ; Wu, YL; Zhou, YF; He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan.
2001
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号64期号:3页码:-
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.
部门归属Natl Taiwan Univ, Dept Phys, Taipei, Taiwan; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
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
学科领域Physics
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收录类别SCI
WOS记录号WOS:000170265300012
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被引频次:43[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13697
专题理论物理所1978-2010年知识产出
通讯作者He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan.
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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):-.
APA He, XG,Hsiao, YK,Shi, JQ,Wu, YL,Zhou, YF,&He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan..(2001).CP violating phase gamma from a global fit of rare charmless hadronic B decays.PHYSICAL REVIEW D,64(3),-.
MLA He, XG,et al."CP violating phase gamma from a global fit of rare charmless hadronic B decays".PHYSICAL REVIEW D 64.3(2001):-.
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