Analysis of PsN ->VN Reactions through s-Channel Picture
Kohei Inoue, T. Kawabe, Mario Kokichi Uehara · Progress of Theoretical Physics · 1974
Four neutral vector meson production processes initiated by π±N and K±N are analysed through s-channel picture. Amplitudes for π-p →ρ0n are constructed by Hankel functions of the first kind under the assumption that imaginary parts of pion exchange amlitudes, too, are saturated by s-channel resonances with a common impact parameter b0 ≃5 GeV-1, while for real parts the long tail in the impact parameter space is very important. It is shown that partial cross sections, density matrices and the phase coherence between unnatural parity exchange amplitudes are well reproduced. Through SU(3) counting, ω production is analysed and using ρ0 and ω production amplitudes, we investigate K*0 and K*0 productions. Experimental features are qualitatively reproduced. Strong exchange degeneracy between π and B is shown to be broken.