K*Lambda(1116) photoproduction and nucleon resonances

TL;DR

This paper investigates the mechanisms behind K*Lambda(1116) photoproduction near threshold, emphasizing the role of nucleon resonances, particularly D13(2080), using an effective Lagrangian approach.

Contribution

It introduces a detailed analysis of nucleon-resonance contributions, especially D13(2080), to better understand the reaction mechanism of K*Lambda(1116) photoproduction.

Findings

D13(2080) resonance is crucial for reproducing experimental data.

The model predicts energy and angular dependence of cross sections.

Theoretical predictions for photon-beam asymmetry are provided.

Abstract

We study the reaction mechanism of K*Lambda(1116) photoproduction off the proton target near threshold considering the contributions from nucleon-resonances. Employing the effective Lagrangian method at the tree-level Born approximation, we investigate the role of the D13(2080) and the D15(2200). We found that the D13 plays a crucial role to reproduce the experimental data well in the forward scattering region at low energy. We also present theoretical predictions on the single photon-beam asymmetry as well as the energy and angular dependence for the cross sections of this reaction.