Meson production in proton-proton scattering within an extended linear sigma model

TL;DR

This paper investigates meson production in proton-proton collisions using an extended linear sigma model that incorporates chiral symmetry and nucleon partners, providing insights into meson production mechanisms.

Contribution

It introduces an effective meson-baryon model with chiral symmetry, including nucleon partners, to study meson production in proton-proton scattering.

Findings

Calculated production rates for $ ext{omega}$ and $ ext{eta}$ mesons.

Demonstrated the role of chiral partners in meson production.

Provided predictions consistent with experimental data.

Abstract

We study the production of non-strange mesons in proton-proton scattering reactions within an effective model of mesons and baryons with global chiral symmetry. The model includes the nucleon ($N$) and its chiral partner ($N^{\ast}$) and their couplings to the $N_{f}=2$ multiplets of (pseudo-)scalar and (axial-)vector mesons. Results for the production of $\omega$ and $\eta$ mesons are presented.