Mass spectrum of the J^P=1/2^- and 3/2^- pentaquark antidecuplets in the perturbative chiral quark model

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dc.creatorInoue, T.
dc.creatorLyubovitskij, V. E.
dc.creatorGutsche, Th.
dc.creatorFaessler, Amand
dc.date2004-07-27
dc.date2005-11-25
dc.date.accessioned2026-07-07T06:38:15Z
dc.date.available2026-07-07T06:38:15Z
dc.descriptionWe study the recently discovered Theta^+ baryon in the context of the perturbative chiral quark model. The basic configuration of the Theta^+ is set up as a pentaquark bound state, where the single particle wave functions are the ground state solutions of a confining potential. We classify the resulting pentaquark multiplets as the J^P=1/2^- and 3/2^- flavor SU(3) antidecuplet. The full mass spectrum of the multiplets is determined by including meson and gluon cloud contributions inducing flavor SU(3) breaking. Mainly due to the semi-perturbative gluon effects the resulting 3/2^- antidecuplet is about 185 MeV heavier than the 1/2^- one. We assign the observed Theta^+ baryon as a member of the 1/2^- antidecuplet and discuss in particular the relation to the recent experimental signal for a Xi^{--} baryon.
dc.description23 pages, 3 figures, RevTeX4; publication version, 21 pages, 6 figures, 14 tables, ws-ijmpe.cls
dc.identifierhttps://arxiv.org/abs/hep-ph/0407305
dc.identifierhttp://arxiv.org/abs/hep-ph/0407305
dc.identifierInt.J.Mod.Phys. E14 (2005) 995-1016
dc.identifierdoi:10.1142/S0218301305003752
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/100673
dc.subjectHigh Energy Physics - Phenomenology
dc.titleMass spectrum of the J^P=1/2^- and 3/2^- pentaquark antidecuplets in the perturbative chiral quark model
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