Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2006-10-19
Nucl.Phys.A790:229-234,2007
Physics
Nuclear Physics
Nuclear Theory
5 pages, 1 figire, 1 table. Talk presented at the 18th International Conference on "Few-Body Problems in Physics", Aug. 21-26,
Scientific paper
10.1016/j.nuclphysa.2007.03.151
A meson-exchange piN model, previously constructed using three-dimensional reduction scheme of the Bethe-Salpeter equation for a model Lagrangian involving \pi, \eta, N, \Delta, rho, and \sigma fields, is extended to energies up to 2 GeV by including the \eta N channel and all the four stars \pi N resonances up to the F-waves. The effects of other 2 pion channels are taken into account phenomenologically. The extended model gives an excellent fit to both piN phase shifts and inelasticity parameters in all channels up to the F-waves. However, a few of the extracted resonance parameters differ considerably from the PDG values.
Chen Guan Yeu
Kamalov Sabit S.
Yang Shin Nan
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