Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-10-22
Z.Phys.C30:615-620,1986
Physics
High Energy Physics
High Energy Physics - Phenomenology
A slightly revised version of Zeitschrift fuer Physik C30, 615 (1986)
Scientific paper
10.1007/BF01571811
A 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.
Beveren Eef van
Dullemond Cornelis
Metzger K.
Ribeiro Emilio J.
Rijken TH. A.
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