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LHCb pentaquark as a D^* Sigma_c-D^* Sigma_c^* molecular state

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LHCb pentaquark as a D^* Sigma_c-D^* Sigma_c^* molecular state

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dc.contributor.author Roca Zamora, Luis
dc.contributor.author Nieves Pamplona, Juan Miguel
dc.contributor.author Oset Báguena, Eulogio
dc.date.accessioned 2016-11-16T09:04:33Z
dc.date.available 2016-11-16T09:04:33Z
dc.date.issued 2015
dc.identifier.citation Roca Zamora, Luis Nieves Pamplona, Juan Miguel Oset Báguena, Eulogio 2015 LHCb pentaquark as a D^* Sigma_c-D^* Sigma_c^* molecular state Physical Review D 92 9 094003
dc.identifier.uri http://hdl.handle.net/10550/55951
dc.description.abstract We perform a theoretical analysis of the Λb→J/ψK−p reaction from where a recent LHCb experiment extracts a Λ(1405) contribution in the K−p spectrum close to threshold and two baryon states of hidden charm in the J/ψp spectrum. We recall that baryon states of this type have been theoretically predicted matching the mass, width and JP of the experiment; concretely some states built up from the J/ψN, D¯∗Λc, D¯∗Σc, D¯Σ∗c and D¯∗Σ∗c coupled channels. We assume that the observed narrow state around 4450 MeV has this nature and we are able to describe simultaneously the shapes and relative strength of the the K−p mass distribution close to threshold and the peak of the J/ψp distribution, with values of the J/ψp coupling to the resonance in line with the theoretical ones. The nontrivial matching of many properties gives support to a JP=3/2− assignment to this state and to its nature as a molecular state mostly made of D¯∗Σc and D¯∗Σ∗c.
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2015, vol. 92, num. 9, p. 094003
dc.subject Física
dc.title LHCb pentaquark as a D^* Sigma_c-D^* Sigma_c^* molecular state
dc.type journal article es_ES
dc.date.updated 2016-11-16T09:04:34Z
dc.identifier.doi 10.1103/PhysRevD.92.094003
dc.identifier.idgrec 108205
dc.rights.accessRights open access es_ES

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