Photoproduction of K Sigma(1385) from the nucleon

TL;DR

This paper investigates the photoproduction of K Sigma(1385) from nucleons, analyzing resonance contributions and comparing theoretical predictions with experimental data to understand underlying resonance dynamics.

Contribution

It constructs decay Lagrangians and determines coupling constants for nucleon and Delta resonances around 2 GeV, highlighting the role of known and missing resonances.

Findings

Resonance contributions are significant in K Sigma(1385) photoproduction.

Comparison with experimental data suggests nontrivial roles of certain resonances.

Some missing resonances predicted by quark models may influence the process.

Abstract

The reactions of $K \Sigma(1385)$ photoproduction, i.e., $\gamma p \to K^+ \Sigma^0(1385)$ and $\gamma n \to K^+ \Sigma^-(1385)$, are investigated in the resonance energy region for studying the role of the nucleon and $\Delta$ resonances of masses around 2 GeV. The Lagrangians for describing the decays of these resonances into the $K \Sigma(1385)$ channel are constructed and the decay amplitudes are obtained, which allows us to determine the coupling constants using the predictions of quark models or the data listed by the Particle Data Group. The resulting cross sections are compared to the data from the Thomas Jefferson National Accelerator Facility and the SPring-8, which indicates nontrivial contributions from the two-star-rated resonances in the Particle Data Group as well as from some missing resonances predicted by a quark model.