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Properties of hyperons in chiral perturbation theory

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Properties of hyperons in chiral perturbation theory

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dc.contributor.author Martín Camalich, Jorge
dc.contributor.author Geng, Li Sheng
dc.contributor.author Álvarez Ruso, Luis
dc.contributor.author Vicente Vacas, Manuel José
dc.date.accessioned 2014-10-29T12:22:22Z
dc.date.available 2014-10-29T12:22:22Z
dc.date.issued 2010
dc.identifier.citation Martín Camalich, Jorge Geng, Li Sheng Álvarez Ruso, Luis Vicente Vacas, Manuel José 2010 Properties of hyperons in chiral perturbation theory Nuclear Physics A 835 1-4 337 341
dc.identifier.uri http://hdl.handle.net/10550/39489
dc.description.abstract The development of chiral perturbation theory in hyperon phenomenology has been troubled due to power-counting subtleties and to a possible slow convergence. Furthermore, the presence of baryon-resonances, e.g. the lowest-lying decuplet, complicates the approach, and the inclusion of their effects may become necessary. Recently, we have shown that a fairly good convergence is possible using a renormalization prescription of the loop-divergencies which recovers the power counting, is covariant and consistent with analyticity. Moreover, we have systematically incorporated the decuplet resonances taking care of both power-counting and consistency problems. A model-independent understanding of diferent properties including the magnetic moments of the baryon-octet, the electromagnetic structure of the decuplet resonances and the hyperon vector coupling f(1) (0), has been successfully achieved within this approach. We will briefly review these developments and stress the important role they play for an accurate determination of the Cabibbo-Kobayashi-Maskawa matrix element V(us) hyperon semileptonic decay data.
dc.language.iso eng
dc.relation.ispartof Nuclear Physics A, 2010, vol. 835, num. 1-4, p. 337-341
dc.subject Física
dc.title Properties of hyperons in chiral perturbation theory
dc.type journal article es_ES
dc.date.updated 2014-10-29T12:22:22Z
dc.identifier.doi 10.1016/j.nuclphysa.2010.01.213
dc.identifier.idgrec 061899
dc.rights.accessRights open access es_ES

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