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

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.

Comments: Presented at Excited QCD 2014, Bjelasnica Mountain, Sarajevo