Study of $a_1(1260)$ in the $\gamma p\to {\pi }^{+}{\pi }^{+}{\pi }^{-}n$ reaction

Xu Zhang, Ju-Jun Xie

We investigate the discovery potential of the $a_1(1260)$ photoproduction in the $\gamma p\to a_1(1260{)}^{+}n$ and $\gamma p\to {\pi }^{+}{\pi }^{+}{\pi }^{-}n$ reactions via the $\pi$-exchange mechanism. For the $…