Helicity Amplitudes for Photoproduction of Baryons with J = 1/2 and JP = 3/2+**Supported by the Chinese Scholarship Council (CSC)

Abstract

We derive the separate helicity amplitudes using the partial wave analysis in the process of pseudo-scalar meson photoproduction. For JP = 3/2+, we find the amplitude is model independent. According to parity conservation, the general amplitude in the case of JP = 1/2− is obtained. We prove this general amplitude corresponds to the situation of λ = −1 when adopting the circular polarization. Finally, the formulas of scattering amplitudes involving the meson photoproduction with JP = 3/2+ are obtained from the chiral quark model.