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By using an effective Lagrangian method, we study the effects of a newlyproposed $\Sigma^*(1/2^-)$ state with mass around 1380 MeV in the initial-statepolarized $\gamma N\rightarrow K^{+} \Sigma^*(1385) \rightarrow K^{+} \pi\Lambda$ process near threshold. The theoretical predictions for the helicitycross sections $\sigma_{3/2}$, $\sigma_{1/2}$ as well as their ratios, and theangular distributions of $\pi$ in the $\pi\Lambda$ center-of-mass system aregiven. It is found that assuming $\Sigma^*(1/2^-)$ exists or not, thesephysical quantities are distinctly different. So our results could be usefulfor the investigation of the existence of $\Sigma^*(1/2^-)$ when theexperimental data are available in the future.

physical review. c. nuclear physics/physical review. c, nuclear physics

Possible $\Sigma^*(1/2^-)$ in the initial-state polarized $\gamma  N\rightarrow K^{+} \Sigma^*(1385) \rightarrow K^{+} \pi \Lambda$ reaction  near threshold