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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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.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.rights.uri info:eu-repo/semantics/openAccess
dc.source 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.subject Física
dc.title Compositeness of the strange, charm, and beauty odd parity Lambda states
dc.type info:eu-repo/semantics/article
dc.date.updated 2016-11-16T12:29:43Z
dc.identifier.doi https://doi.org/10.1103/PhysRevD.92.034011
dc.identifier.idgrec 108197

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