Weak Production of Strange Particles and $\eta$ Mesons off the Nucleon

TL;DR

This paper models strange particle and eta meson production off nucleons induced by (anti)neutrinos, using a microscopical approach based on SU(3) chiral Lagrangian, including relevant resonances.

Contribution

It introduces a detailed microscopical model for neutrino-induced strange particle and eta production, incorporating key resonances and chiral dynamics.

Findings

Model successfully describes production channels

Includes relevant baryon resonances

Provides parameters for future experimental comparisons

Abstract

The strange particle production induced by (anti)neutrino off nucleon has been studied for $|\Delta S|=0$ and $|\Delta S|=1$ channels. The reactions those we have considered are for the production of single kaon/antikaon, eta and associated particle production processes. We have developed a microscopical model based on the SU(3) chiral Lagrangian. The basic parameters of the model are $f_\pi$, the pion decay constant, Cabibbo angle, the proton and neutron magnetic moments and the axial vector coupling constants for the baryons octet. For antikaon production we have also included $\Sigma^*$(1385) resonance and for eta production $S_{11}$(1535) and $S_{11}$(1650) resonances are included.