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Low-lying even-parity meson resonances and spin-flavor symmetry

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Low-lying even-parity meson resonances and spin-flavor symmetry

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dc.contributor.author García Recio, Carmen
dc.contributor.author Geng, Li Sheng
dc.contributor.author Nieves Pamplona, Juan Miguel
dc.contributor.author Salcedo, Lorenzo Luis
dc.date.accessioned 2014-10-28T09:36:03Z
dc.date.available 2014-10-28T09:36:03Z
dc.date.issued 2011
dc.identifier.citation García Recio, Carmen Geng, Li Sheng Nieves Pamplona, Juan Miguel Salcedo, Lorenzo Luis 2011 Low-lying even-parity meson resonances and spin-flavor symmetry Physical Review D 83 1 016007
dc.identifier.uri http://hdl.handle.net/10550/39403
dc.description.abstract Based on a spin-flavor extension of chiral symmetry, a novel s-wave meson-meson interaction involving members of the rho nonet and of the pi octet is introduced, and its predictions are analyzed. The starting point is the SU(6) version of the SU(3)-flavor Weinberg-Tomozawa Lagrangian. SU(6) symmetry-breaking terms are then included to account for the physical meson masses and decay constants in a way that preserves (broken) chiral symmetry. Next, the T-matrix amplitudes are obtained by solving the Bethe-Salpeter equation in a coupled-channel scheme, and the poles are identified with their possible Particle Data Group counterparts. It is shown that most of the low-lying even-parity Particle Data Group meson resonances, especially in the J(P) = 0(+) and 1(+) sectors, can be classified according to multiplets of SU(6). The f(0)(1500), f(1)(1420), and some 0(+)(2(++)) resonances cannot be accommodated within this scheme, and thus they would be clear candidates to be glueballs or hybrids. Finally, we predict the existence of five exotic resonances (I >= 3/2 and/or vertical bar Y vertical bar = 2) with masses in the range of 1.4-1.6 GeV, which would complete the 27(1), 10(3), and 10(3)* multiplets of SU(3) circle times SU(2).
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2011, vol. 83, num. 1, p. 016007
dc.title Low-lying even-parity meson resonances and spin-flavor symmetry
dc.type journal article es_ES
dc.date.updated 2014-10-28T09:36:03Z
dc.identifier.doi 10.1103/PhysRevD.83.016007
dc.identifier.idgrec 068077
dc.rights.accessRights open access es_ES

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