A low-lying scalar meson nonet in a unitarized meson model

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dc.creatorvan Beveren, E.
dc.creatorRijken, T. A.
dc.creatorMetzger, K.
dc.creatorDullemond, C.
dc.creatorRupp, G.
dc.creatorRibeiro, J. E.
dc.date2007-10-22
dc.date.accessioned2026-07-07T11:44:46Z
dc.date.available2026-07-07T11:44:46Z
dc.descriptionA unitarized nonrelativistic meson model which is successful for the description of the heavy and light vector and pseudoscalar mesons yields, in its extension to the scalar mesons but for the same model parameters, a complete nonet below 1 GeV. In the unitarization scheme, real and virtual meson-meson decay channels are coupled to the quark-antiquark confinement channels. The flavor-dependent harmonic-oscillator confining potential itself has bound states epsilon(1.3 GeV), S(1.5 GeV), delta(1.3 GeV), kappa(1.4 GeV), similar to the results of other bound-state qqbar models. However, the full coupled-channel equations show poles at epsilon(0.5 GeV), S(0.99 GeV), delta(0.97 GeV), kappa(0.73 GeV). Not only can these pole positions be calculated in our model, but also cross sections and phase shifts in the meson-scattering channels, which are in reasonable agreement with the available data for pion-pion, eta-pion and Kaon-pion in S-wave scattering.
dc.descriptionA slightly revised version of Zeitschrift fuer Physik C30, 615 (1986)
dc.identifierhttps://arxiv.org/abs/0710.4067
dc.identifierhttp://arxiv.org/abs/0710.4067
dc.identifierZ.Phys.C30:615-620,1986
dc.identifierdoi:10.1007/BF01571811
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201667
dc.subjectHigh Energy Physics - Phenomenology
dc.titleA low-lying scalar meson nonet in a unitarized meson model
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