Resonances and the Weinberg--Tomozawa 56-baryon --35-meson interaction

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dc.creatorGarcia-Recio, C.
dc.creatorNieves, J.
dc.creatorSalcedo, L. L.
dc.date2006-10-11
dc.date2006-11-16
dc.date.accessioned2026-07-07T10:25:40Z
dc.date.available2026-07-07T10:25:40Z
dc.descriptionVector meson degrees of freedom are incorporated into the Weinberg-Tomozawa (WT) meson-baryon chiral Lagrangian by using a scheme which relies on spin--flavor SU(6) symmetry. The corresponding Bethe-Salpeter approximation successfully reproduces previous SU(3)--flavor WT results for the lowest-lying s--wave negative parity baryon resonances, and it also provides some information on the dynamics of the heavier ones. Moreover, it also predicts the existence of an isoscalar spin-parity $\frac32^-$ $K^*N$ bound state (strangeness +1) with a mass around 1.7--1.8 GeV, unstable through $K^*$ decay. Neglecting d-wave KN decays, this state turns out to be quite narrow ($Γ\le 15$ MeV) and it might provide clear signals in reactions like $γp \to \bar K^0 p K^+π^-$ by looking at the three body $p K^+π^-$ invariant mass.
dc.descriptionTalk given at the IVth International Conference on Quarks an Nuclear Physics, Madrid, June 5th-10th 2006. Minor corrections
dc.identifierhttps://arxiv.org/abs/hep-ph/0610127
dc.identifierhttp://arxiv.org/abs/hep-ph/0610127
dc.identifierEur.Phys.J.A31:499-502,2007
dc.identifierdoi:10.1140/epja/i2006-10203-9
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176615
dc.subjectHigh Energy Physics - Phenomenology
dc.titleResonances and the Weinberg--Tomozawa 56-baryon --35-meson interaction
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