Eur. Phys. J. A 13, 355-362 (2002)
-meson photoproduction on nucleons in the near-threshold regionH. Babacan, T. Babacan, A. Gokalp and O. Yilmaz
Physics Department, Middle East Technical University, 06531 Ankara, Turkey firstname.lastname@example.org
(Received: 10 October 2001 / Revised version: 11 December 2001 Communicated by V.V. Anisovich)
The -meson photoproduction, , is studied in the framework of a model, containing -meson exchange in t-channel and nucleon-exchange in s- and u-channels. Considering both coupling constants in the region of time-like meson four-momenta as the free parameters, we find different sets of solutions for these constants from the existing data on the t-dependence of the differential cross-sections, , in the near-threshold region GeV. These sets of coupling constants, corresponding to destructive and constructive -interference contributions to can be well distinguished by measurements of beam asymmetry, induced by linear photon polarization.
13.60.Le - Meson production.
13.88.+e - Polarization in interactions and scattering.
24.70.+s - Polarization phenomena in reactions.
25.20.Lj - Photoproduction reactions.
© Società Italiana di Fisica, Springer-Verlag 2002