Phenomenological model for the Kbar N --> K Xi reaction

TL;DR

This paper introduces a phenomenological model for the Kbar N to K Xi reaction, incorporating various hyperonic exchanges and high-spin resonances, successfully fitting experimental data from threshold to 2.8 GeV.

Contribution

The model explicitly includes high-spin propagators and hyperonic resonances, providing a comprehensive description of the reaction mechanism.

Findings

Good agreement with experimental cross sections and polarizations

High-mass, high-spin resonances are crucial in the reaction

Model applicability to Xi production and hypernuclear spectroscopy

Abstract

A phenomenological model for the Kbar N --> K Xi reaction is suggested. The model includes s and u channel exchanges by Lambda, Sigma, Sigma(1385), and Lambda(1520) and s channel exchanges by above-threshold hyperonic resonances. Explicit expression for the propagator for a particle with spin 7/2 is presented. High-mass and high-spin resonances play a significant role in the process. We deal with the whole set of existing experimental data on the cross sections and polarizations in the energy range from the threshold to 2.8 GeV in the center-of-mass system and reach a good agreement with experiments. Applications of the model to other elementary reactions of Xi production and to Xi hypernuclear spectroscopy are briefly discussed.