D(s)-> k,k*, phi form factors in the covariant light-front approach and exclusive d(s) decays
文献类型：期刊论文
| 作者 | Wang, Wei1; Shen, Yue-Long2 |
| 刊名 | Physical review d
 |
| 出版日期 | 2008-09-01 |
| 卷号 | 78期号:5页码:11 |
| ISSN号 | 1550-7998 |
| DOI | 10.1103/physrevd.78.054002 |
| 通讯作者 | Wang, wei() |
| 英文摘要 | In the covariant light-front quark model, we investigate the form factors of d(s) -> k, k*, phi transitions and compare our results with the experimental data and the previous theoretical studies. the semileptonic d(s) decays are studied: our result for the branching ratio of d(s) phi l(+) nu is consistent with the data; while the other predictions, such as br(d(s)(+) -> (k) over bar (0) l(+) nu), the branching ratio and the polarization of d(s) -> (k) over bar (0) l(+) nu, will be tested at the future experiments. utilizing the results for form factors, we then calculate the two-body nonleptonic ds decays and find: up to the leading power accuracy, theoretical predictions on branching ratios of nonleptonic ds decays are typically smaller than the experimental data by a factor of 1.5-2.0. large contributions from weak annihilation diagrams, together with the s, t-channel final state interactions, are expected to resolve this problem. the d(s) -> k(+) k*(0) decay, which can be easily measured in the k(+) k(-) pi(-) final state, can directly shed light on internal information of the doubly cabibbo-suppressed decay amplitudes. |
| WOS关键词 | SEMILEPTONIC DECAYS ; NONLEPTONIC DECAYS ; B-MESONS ; SUM-RULE |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000259692600023 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2175876 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Wang, Wei |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Ocean Univ China, Inst Informat Sci & Engn, Qingdao 266100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Wei,Shen, Yue-Long. D(s)-> k,k*, phi form factors in the covariant light-front approach and exclusive d(s) decays[J]. Physical review d,2008,78(5):11. |
| APA | Wang, Wei,&Shen, Yue-Long.(2008).D(s)-> k,k*, phi form factors in the covariant light-front approach and exclusive d(s) decays.Physical review d,78(5),11. |
| MLA | Wang, Wei,et al."D(s)-> k,k*, phi form factors in the covariant light-front approach and exclusive d(s) decays".Physical review d 78.5(2008):11. |
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来源：高能物理研究所
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