Lambda(1520) photoprodcution with Regge contribution

TL;DR

This paper investigates Lambda(1520) photoproduction using an effective Lagrangian approach, incorporating Regge trajectories and polarization observables, achieving qualitative agreement with experimental data.

Contribution

It introduces the inclusion of Regge trajectories in the effective Lagrangian model for Lambda(1520) photoproduction, enhancing the theoretical description.

Findings

Good qualitative agreement with experimental data on angular and energy dependence.

Polarization observables are successfully computed and match experimental trends.

The K^- angle distribution function is calculated using polarization-transfer coefficients.

Abstract

In this talk, we report our recent progresses on the Lambda(1520) photoproduction using the effective Lagrangian approach. In addition to the tree-level Born diagrams, we take into account the Regge-trajectories for the possible strange-meson exchanges in the t channel. We compute the angular and energy dependences of the production process, including polarization observables, such as the photon-beam asymmetry and the polarization-transfer coefficients, resulting in good qualitative agreement with current experimental data. We also compute the K^- angle distribution function in the Gottfried-Jackson frame, using the polarization-transfer coefficients in the z direction.