Study of $N(1520)$ and $N(1535)$ structures via ${\gamma }^{\ast }p\to N^{\ast }$ transitions

A. Kaewsnod, K. Xu, Z. Zhao +4

The helicity amplitudes of the $N(1520)$ and $N(1535)$ resonances in the ${\gamma }^{\ast }p\to N^{\ast }$ electromagnetic transition are studied in the constituent quark model using the impulse appro…