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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
Source PublicationEUROPEAN PHYSICAL JOURNAL C
Language英语
KeywordBARYON RESONANCES CHIRAL DYNAMICS CHARMED BARYONS COUPLED-CHANNEL FORM-FACTORS MESON SCATTERING HADRONS STATES MODEL
AbstractWe 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.
2019
ISSN1434-6044
Volume79Issue:5Pages:417
Subject AreaPhysics
MOST Discipline CataloguePhysics, Particles & Fields
DOI10.1140/epjc/s10052-019-6929-7
Indexed BySCIE
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/23429
Collection理论物理所科研产出_SCI期刊论文
Affiliation1.[Nieves, J.
2.Pavao, R.] Ctr Mixto CSIC UV, Inst Fis Corpuscular, Inst Invest Paterna, Aptdo 22085, Valencia 46071, Spain
3.[Sakai, S.] Chinese Acad Sci, Inst Theoret Phys, Zhong Guan Cun East St 55, Beijing 100190, Peoples R China
Recommended Citation
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.
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