Influence of the eta exchange to the eta production in proton-proton scattering

TL;DR

This paper investigates how different meson exchanges, especially eta exchange, affect eta meson production in proton-proton scattering, using coupled-channel and multi-resonance models to explain observed cross sections and energy distributions.

Contribution

It provides a comparative analysis of meson exchange types within advanced models to clarify eta production mechanisms in proton-proton scattering.

Findings

Eta exchange can explain the shape of observed cross sections under certain conditions.

The study presents total cross section results across a full energy range.

Proton-proton energy distribution at 15.5 MeV is analyzed and compared with experimental data.

Abstract

Eta meson production in the proton-proton scattering is dominated by the low-mass meson exchange. We present a brief study on how the type of the exchanged mesons within coupled-channel and multi-resonance model influences the scattering observables. We show under which circumstances the eta exchange may explain the shape of the observed cross sections, and present a few selected results: total cross section in the full energy range, and the proton-proton energy distribution at 15.5 MeV.