Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1997-06-03
Phys.Rev.C56:1099-1113,1997
Physics
Nuclear Physics
Nuclear Theory
31 pages in Latex file
Scientific paper
10.1103/PhysRevC.56.1099
An unified approach to the pseudo scalar meson ($\pi, \eta$, and $K$) photoproduction off nucleons are presented. It begins with the low energy QCD Lagrangian, and the resonances in the s- and u- channels are treated in the framework of the quark model The duality hypothesis is imposed to limit the number of the t-channel exchanges. The CGLN amplitudes for each reaction are evaluated, which include both proton and neutron targets. The important role by the S-wave resonances in the second resonance region is discussed, it is particularly important for the $K, \eta$ and $\eta^\prime$ photoproductions.
Hongxing Ye
Li Zhenping
Minghui Lu
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