Regular Article - Theoretical Physics
A hidden local symmetry approach to rho-meson photoproduction
Research Center for Nuclear Physics, Osaka University, Mihogaoka 10-1, 567-0047, Osaka, Japan
2 Kernfysisch Versneller Instituut, University of Groningen, 9747 AA, Groningen, The Netherlands
Accepted: 19 March 2012
Published online: 2 May 2012
We study the photoproduction of -mesons in a model of hidden local symmetry. For this purpose, the -meson is introduced as a hidden-gauge boson in a non-linear sigma model. For charged -meson photoproduction, the model takes into account the -meson magnetic moments from the three-point vertex in the kinetic terms. We show that the magnetic interaction of the charged -meson has a significant effect on the total cross-sections through the -meson exchange process, which is proportional to the energy of the photon. The t -channel dominance may be used for the study of structures of various unstable particles.
© SIF, Springer-Verlag Berlin Heidelberg, 2012