Knowledge Management System of Institute of Theoretical Physics, CAS
He, XG; Hsiao, YK; Shi, JQ; Wu, YL; Zhou, YF; He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan. | |
CP violating phase gamma from a global fit of rare charmless hadronic B decays | |
Source Publication | PHYSICAL REVIEW D |
Keyword | 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 |
Abstract | 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. |
2001 | |
ISSN | 0556-2821 |
Volume | 64Issue:3Pages:- |
Subject Area | Physics |
Indexed By | SCI |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.itp.ac.cn/handle/311006/13697 |
Collection | 理论物理所科研产出_SCI论文 |
Corresponding Author | He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan. |
Recommended Citation GB/T 7714 | 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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