Lambda(b) decays into Lambda cl(nu)over-barl and Lambda c*pi(-) [ Lambda(c)* = Lambda(c)( 2595) and Lambda(c)(2625)] and heavy quark spin symmetry
文献类型：期刊论文
| 作者 | Nieves, J; Pavao, R; Sakai, S |
| 刊名 | EUROPEAN PHYSICAL JOURNAL C
 |
| 出版日期 | 2019 |
| 卷号 | 79期号:5页码:417 |
| ISSN号 | 1434-6044 |
| 关键词 | BARYON RESONANCES CHIRAL DYNAMICS CHARMED BARYONS COUPLED-CHANNEL FORM-FACTORS MESON SCATTERING HADRONS STATES MODEL |
| DOI | 10.1140/epjc/s10052-019-6929-7 |
| 英文摘要 | We study the implications for bc=c(2595) and c(2625)] decays that can be deduced from heavy quark spin symmetry (HQSS). Identifying the odd parity c(2595) and c(2625) resonances as HQSS partners, with total angular momentum-parity jqP=1- for the light degrees of freedom, we find that the ratios (bc(2595)-)/(bc(2625)-) and (bc(2595)) agree, within errors, with the experimental values given in the Review of Particle Physics. We discuss how future, and more precise, measurements of the above branching fractions could be used to shed light into the inner HQSS structure of the narrow c(2595) odd-parity resonance. Namely, we show that such studies would constrain the existence of a sizable jqP=0- component in its wave-function, and/or of a two-pole pattern, in analogy to the case of the similar (1405) resonance in the strange sector, as suggested by most of the approaches that describe the c(2595) as a hadron molecule. We also investigate the lepton flavor universality ratios R[c]=B( may be affected by a new source of potentially large systematic errors if there are two) poles. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/23429]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Pavao, R.] Ctr Mixto CSIC UV, Inst Fis Corpuscular, Inst Invest Paterna, Aptdo 22085, Valencia 46071, Spain 2.[Sakai, S.] Chinese Acad Sci, Inst Theoret Phys, Zhong Guan Cun East St 55, Beijing 100190, Peoples R China 3.[Nieves, J. |
| 推荐引用方式 GB/T 7714 | Nieves, J,Pavao, R,Sakai, S. Lambda(b) decays into Lambda cl(nu)over-barl and Lambda c*pi(-) [ Lambda(c)* = Lambda(c)( 2595) and Lambda(c)(2625)] and heavy quark spin symmetry[J]. EUROPEAN PHYSICAL JOURNAL C,2019,79(5):417. |
| APA | Nieves, J,Pavao, R,&Sakai, S.(2019).Lambda(b) decays into Lambda cl(nu)over-barl and Lambda c*pi(-) [ Lambda(c)* = Lambda(c)( 2595) and Lambda(c)(2625)] and heavy quark spin symmetry.EUROPEAN PHYSICAL JOURNAL C,79(5),417. |
| MLA | Nieves, J,et al."Lambda(b) decays into Lambda cl(nu)over-barl and Lambda c*pi(-) [ Lambda(c)* = Lambda(c)( 2595) and Lambda(c)(2625)] and heavy quark spin symmetry".EUROPEAN PHYSICAL JOURNAL C 79.5(2019):417. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。