Nucleon and Delta resonances in K Sigma(1385) photoproduction from nucleons

TL;DR

This study investigates the reaction mechanisms of K Sigma(1385) photoproduction from nucleons using a hadronic model, highlighting the roles of specific nucleon and delta resonances and comparing results with experimental data.

Contribution

It introduces a hadronic model incorporating nucleon and delta resonances with decay couplings from a quark model, providing detailed predictions for cross sections and asymmetries.

Findings

Key resonances include Δ(2000) F35, Δ(1940) D33, N(2080) D13, and N(2095) missing resonance.

The model's total cross section aligns with Jefferson Lab data.

Predictions for differential cross sections and photon asymmetry are provided.

Abstract

The reaction mechanisms for $K\Sigma(1385)$ photoproduction from the reaction $\gamma p \to K^+\Sigma^{0}(1385)$ in the resonance energy region are investigated in a hadronic model. Both contributions from $N$ and $\Delta$ resonances of masses around 2 GeV as given in the Review of Particle Data Group and by the quark model predictions are included. The Lagrangians for describing the decays of these resonances into $K\Sigma(1385)$ are constructed with the coupling constants determined from the decay amplitudes predicted by a quark model. Comparing the resulting total cross section for the reaction $\gamma p \to K^+\Sigma^{0}(1385)$ with the preliminary data from the Thomas Jefferson National Accelerator Facility, we find that the most important contributions are from the two-star rated resonances $\Delta(2000) F_{35}$, $\Delta(1940) D_{33}$, and $N(2080) D_{13}$, as well as the missing resonance $N\frac32^-(2095)$ predicted in the quark model. Predictions on the differential cross section and photon asymmetry in this reaction are also given.