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Lambda(1405) and (Lambda)over-bar(1405) in J/psi four-body decays

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Lambda(1405) and (Lambda)over-bar(1405) in J/psi four-body decays

dc.contributor.author	Li, Chiang-bing
dc.contributor.author	Oset Báguena, Eulogio
dc.date.accessioned	2015-09-08T09:19:54Z
dc.date.available	2015-09-08T09:19:54Z
dc.date.issued	2004
dc.identifier.uri	http://hdl.handle.net/10550/46948
dc.description.abstract	We study the structure of the baryon resonances Λ(1405) and Λ¯(1405) in J/ψ four body decays J/ψ→ΣΣ¯ππ in the framework of a coupled channel chiral unitary approach. With still sufficient freedom for model parameters, the Λ(1405) and Λ¯(1405) resonances are generated by simultaneously taking the meson baryon and meson anti-baryon final state interactions into account. The πΣ (πΣ¯) invariant mass distributions peak around 1410 MeV, which favors the assertion that the Λ(1405) (Λ¯(1405)) is a superposition of the two Λ(1405) (Λ¯(1405)) states which dominantly couple to K¯N (KN¯) and πΣ (πΣ¯), respectively. We also calculate the amplitude for isospin I=1 which gives hints on a possible I=1 baryon resonance in the energy region of the Λ(1405), which up to now has not been observed.
dc.language.iso	eng
dc.relation.ispartof	Physical Review C, 2004, vol. 70, num. 6, p. 065202-1-065202-8
dc.rights.uri	info:eu-repo/semantics/openAccess
dc.source	Li, Chiang-bing Oset Báguena, Eulogio 2004 Lambda(1405) and (Lambda)over-bar(1405) in J/psi four-body decays Physical Review C 70 6 065202-1 065202-8
dc.subject	Física
dc.title	Lambda(1405) and (Lambda)over-bar(1405) in J/psi four-body decays
dc.type	info:eu-repo/semantics/article
dc.date.updated	2015-09-08T09:19:54Z
dc.identifier.doi	http://dx.doi.org/10.1103/PhysRevC.70.065202
dc.identifier.idgrec	017666