Contribution of N* and Delta* resonances in K* Sigma(1190) photoproduction

TL;DR

This paper investigates the mechanisms behind K* Sigma(1190) photoproduction, showing that certain resonances are negligible near threshold while other exchanges dominate, aligning well with experimental data.

Contribution

The study provides a theoretical analysis of resonance contributions in K* Sigma(1190) photoproduction using the effective Lagrangian method, highlighting dominant exchange processes.

Findings

N* and Delta* resonances are negligible near threshold.

Kappa and K exchanges dominate in the t channel.

Results qualitatively agree with experimental data.

Abstract

In this talk, we report theoretical studies on the K*0 Sigma+(1190) photoproduction in the tree-level Born approximation, employing the effective Lagrangian method. We present the energy and angular dependences of the cross sections. It turns out that the N* and Delta* resonance contributions are negligible in the vicinity of the threshold. On the contrary, we observe that the kappa and K exchanges in the t channel and Delta(1232) in the s channel dominate the scattering process, reproducing the experimental data qualitatively well.