Semi-inclusive B -> K(K*)X decays with initial bound state effects
文献类型：期刊论文
| 作者 | Ma, JP ; He, XG; Jin, CH; He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan.
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| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2001 |
| 卷号 | 64期号:1页码:- |
| 关键词 | Improved Factorization Approach Direct Cp Violation B-meson Decays Qcd Factorization Heavy-quark Electroweak Penguins V-ub Spectrum Physics Phases |
| ISSN号 | 0556-2821 |
| 英文摘要 | The effects of the initial b quark bound state for the semi-inclusive decays B --> K(K*)X are studied using light cone expansion and heavy quark effective theory methods. We find that the initial bound state effects on the branching ratios and CP asymmetries are small. In the light cone expansion approach, the CP-averaged branching ratios are increased by about 2% with respect to the free b-quark decay. For (B) over bar (o)-->-K-(K*(-))X. the CP-averaged branching ratios are sensitive to the phase gamma and the CP asymmetry can be as large as 7% (14%), whereas for B--->(K) over bar *o((K) over bar*(o))X the CP-averaged branching ratios are not sensitive to gamma and the CP asymmetries are small (<1%). The CP-averaged branching ratios are predicted to be in the ranges (0.53-1.5) x 10(-4) [(0.25-2.0) x 10(-4)] for <(B)over bar>(o)-->K-(K*(-))X and (0.77-0.84)X 10(-4) [(0.67-0.74) x 10(-4)] for B--->(K)over bar>(o)((K) over bar*(o))X, depending on the value of the CP violating phase gamma. In the heavy quark effective theory approach, we find that the branching ratios are decreased by about 10% and the CP asymmetries are not affected. These predictions can be tested in the near future. |
| 学科主题 | Physics |
| WOS记录号 | WOS:000169619300043 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/12714]  |
| 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 | Ma, JP,He, XG,Jin, CH,et al. Semi-inclusive B -> K(K*)X decays with initial bound state effects[J]. PHYSICAL REVIEW D,2001,64(1):-. |
| APA | Ma, JP,He, XG,Jin, CH,&He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan..(2001).Semi-inclusive B -> K(K*)X decays with initial bound state effects.PHYSICAL REVIEW D,64(1),-. |
| MLA | Ma, JP,et al."Semi-inclusive B -> K(K*)X decays with initial bound state effects".PHYSICAL REVIEW D 64.1(2001):-. |
入库方式： OAI收割
来源：理论物理研究所
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