CP violating phase gamma from a global fit of rare charmless hadronic B decays
文献类型：期刊论文
| 作者 | Hsiao, YK; Shi, JQ; Wu, YL ; He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan.; Zhou, YF; He, XG
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| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2001 |
| 卷号 | 64期号:3页码:- |
| ISSN号 | 0556-2821 |
| 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 |
| 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. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000170265300012 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13697]  |
| 专题 | 理论物理研究所_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. |
| 推荐引用方式 GB/T 7714 | Hsiao, YK,Shi, JQ,Wu, YL,et al. CP violating phase gamma from a global fit of rare charmless hadronic B decays[J]. PHYSICAL REVIEW D,2001,64(3):-. |
| APA | Hsiao, YK,Shi, JQ,Wu, YL,He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan.,Zhou, YF,&He, XG.(2001).CP violating phase gamma from a global fit of rare charmless hadronic B decays.PHYSICAL REVIEW D,64(3),-. |
| MLA | Hsiao, YK,et al."CP violating phase gamma from a global fit of rare charmless hadronic B decays".PHYSICAL REVIEW D 64.3(2001):-. |
入库方式： OAI收割
来源：理论物理研究所
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