Photoproduction of the Scalar Meson $f_0(500)$

Abstract

In the present talk, we report a recent investigation on photoproduction of the $\gamma N\to f_0(500)N$ within a framework of the effective Lagrangian. We include the nucleon resonances with pin $1/2$ in the $s$ channel. The coupling constants have been etermined by assuming that the decay process $N^{\ast }\to (\pi \pi {)}_{I=0,J=0}N$ can be regarded as $N^{\ast }\to f_0(500)N$. We discuss the numerical results for the total cross sections and possible extension of the present work.

4 pages, 5 figures. A contribution to The 10th International Workshop on the Physics of Excited Nucleons (NSTAR2015) held in Osaka University, May 25(Mon)-28(Thu), 2015