Study of nucleon resonances in the $γp \to φK^+ Λ$ reaction near threshold

Qi-Fang Lü, Rong Wang, Ju-Jun Xie, Xu-Rong Chen, De-Min Li

Published 2014-12-19Version 1

We investigate the $\gamma p \to \phi K^+ \Lambda$ reaction near threshold within an effective Lagrangian approach and the isobar model. Various nucleon resonances due to the $\pi$ and $\eta$ mesons exchanges and background contributions are considered. It is shown that the contribution from the $N^*(1535)$ resonance due to the $\eta$ meson exchange plays the predominant role. Hence, this reaction provides a new good platform to study the $N^*(1535)$ resonance. The predicted total cross section and specific features of angular distributions can be tested by the future experiments.