(Beta)over-bar(0)->pi X+ in the standard model
文献类型：期刊论文
| 作者 | He, XG; Kao, CP; Ma, JP ; Pakvasa, S; He, XG , Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan.
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2002 |
| 卷号 | 66期号:9页码:- |
| ISSN号 | 0556-2821 |
| 关键词 | Improved Factorization Approach Direct Cp Violation Hadronic B-decays Heavy-quark Limit Weak Phase-gamma B->k-pi Decays Qcd Factorization Perturbative Qcd Electroweak Penguins Branching Ratio |
| 英文摘要 | We investigate the possibility of studying the B-->pi form factor using the semi-inclusive decays (B) over bar (0)-->pi(+)+X-q. In general, B-->PX semi-inclusive decays involve several hadronic parameters. However, for (B) over bar (0)-->pi(+)X(q) decays, we find that in the factorization approximation, the only unknown hadronic parameters are the form factors F-0,1(B-->pi). Therefore, these form factors can be studied in (B) over bar (0)-->pi(+)X(q) decays. Using theoretical model calculations for the form factors, the branching ratios for (B) over bar (0)-->pi(+)X(d)(DeltaS=0) and (B) over bar (0)-->pi(+)X(s)(DeltaS=-1), with E-pi>2.1 GeV, are estimated to be in the ranges of (3.1-4.9)x10(-5)[F-1(B-->pi)(0)/0.33](2) and (2.5-4.2)x10(-5)[F-1(B-->pi)(0)/0.33](2), respectively, depending on the value of the CP-violating phase gamma. The combined branching ratio for (B) over bar (0)-->pi(+)(X-d+X-s) is about 7.4x10(-5)[F(1)(B-->)pi(0)/0.33](2) and is insensitive to gamma. We also discuss CP asymmetries in these decay modes. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000179679400075 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13409]  |
| 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 10764, Taiwan. |
| 推荐引用方式 GB/T 7714 | He, XG,Kao, CP,Ma, JP,et al. (Beta)over-bar(0)->pi X+ in the standard model[J]. PHYSICAL REVIEW D,2002,66(9):-. |
| APA | He, XG,Kao, CP,Ma, JP,Pakvasa, S,&He, XG , Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan..(2002).(Beta)over-bar(0)->pi X+ in the standard model.PHYSICAL REVIEW D,66(9),-. |
| MLA | He, XG,et al."(Beta)over-bar(0)->pi X+ in the standard model".PHYSICAL REVIEW D 66.9(2002):-. |
入库方式： OAI收割
来源：理论物理研究所
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