Polarization phenomena in vector meson photoproduction on nucleons near threshold

2000-10-21
Babacan, H
Babacan, T
Gokalp, A
Yılmaz, Osman
We propose and develop a model for rho (0) and omega photoproduction on nucleons near threshold based on t-, s-, and u-channel amplitudes. In t-channel we consider pi- and sigma- exchanges and we take the coupling constants (g(v), g(t)) in (s+u) nucleon contributions as free parameters. We fit our model to the available experimental differential cross-section data of gamma + p --> p + V reactions. We find that different models which are equivalently good for the description of the differential cross-section on proton targets may be differentiated by their predictions of the beam asymmetry on proton and neutron targets and of the differential cross-section on neutron targets.
Citation Formats
H. Babacan, T. Babacan, A. Gokalp, and O. Yılmaz, “Polarization phenomena in vector meson photoproduction on nucleons near threshold,” 2000, vol. 570, p. 551, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/62949.