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Compositeness of the strange, charm, and beauty odd parity Lambda states

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Compositeness of the strange, charm, and beauty odd parity Lambda states

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dc.contributor.author	García Recio, Carmen
dc.contributor.author	Hidalgo Duque, Carlos
dc.contributor.author	Nieves Pamplona, Juan Miguel
dc.contributor.author	Salcedo, Lorenzo Luis
dc.contributor.author	Tolós Rigueiro, Laura
dc.date.accessioned	2016-11-16T12:29:43Z
dc.date.available	2016-11-16T12:29:43Z
dc.date.issued	2015
dc.identifier.citation	García Recio, Carmen Hidalgo Duque, Carlos Nieves Pamplona, Juan Miguel Salcedo, Lorenzo Luis Tolós Rigueiro, Laura 2015 Compositeness of the strange, charm, and beauty odd parity Lambda states Physical Review D 92 3 034011
dc.identifier.uri	http://hdl.handle.net/10550/55976
dc.description.abstract	We study the dependence on the quark mass of the compositeness of the lowest-lying odd parity hyperon states. Thus, we pay attention to Lambda-like states in the strange, charm, and beauty sectors which are dynamically generated using a unitarized meson-baryon model. In the strange sector we use a SU(6) extension of the Weinberg-Tomozawa meson-baryon interaction, and we further implement the heavy-quark spin symmetry to construct the meson-baryon interaction when charmed or beauty hadrons are involved. In the three examined flavor sectors, we obtain two J(P) = 1/2- and one J(P) = 3/2(-) Lambda states. We find that the. states which are bound states (the three Lambda(b)) or narrow resonances [one Lambda(1405) and one Lambda(c)(2595)] are well described as molecular states composed of s-wave meson-baryon pairs. The 1/2(-) wide Lambda(1405) and Lambda(c)(2595) as well as the 3/2(-) Lambda(1520) and Lambda(c)(2625) states display smaller compositeness so they would require new mechanisms, such as d-wave interactions.
dc.language.iso	eng
dc.relation.ispartof	Physical Review D, 2015, vol. 92, num. 3, p. 034011
dc.subject	Física
dc.title	Compositeness of the strange, charm, and beauty odd parity Lambda states
dc.type	journal article	es_ES
dc.date.updated	2016-11-16T12:29:43Z
dc.identifier.doi	10.1103/PhysRevD.92.034011
dc.identifier.idgrec	108197
dc.rights.accessRights	open access	es_ES