Analysis of the new Crystal Ball data on image reaction with beam momenta of image

The Crystal Ball Collaboration has recently reported the differential cross sections and Λ polarization for the reaction image using an incident image beam with momenta between 514 and 750 MeV/c. We make an analysis for this process with an effective Lagrangian approach and study the properties of some Σ resonances around this energy range. With the inclusion of the 4-star resonances image, image, image, image, as well as a image, which is compatible with the 3-star image in PDG, our results can well reproduce the experimental data. The parameters on the Σ resonances and related couplings are studied.