Studies of properties of the eta' meson at the COSY-11 facility

TL;DR

This paper investigates the properties of the eta' meson through experimental analysis of production cross sections, invariant mass distributions, and precise measurement of its total width at the COSY-11 facility.

Contribution

It provides new experimental data on eta' meson production, invariant mass distributions, and a direct measurement of its total width, enhancing understanding of its properties.

Findings

Isospin dependence of eta' production cross section analyzed

Invariant mass distributions compared for different reactions

Total width of eta' meson measured with high precision

Abstract

We shortly discuss results on the isospin dependence of the eta-prime production cross section in nucleon-nucleon collisions, results of comparative analysis of the invariant mass distributions for the pp-->pp eta-prime and pp-->pp eta reactions, and we present the value of the total width of the eta-prime meson as derived directly from the mass distribution measured with the mass resolution of 0.3~MeV/c^2.