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

TL;DR

This paper investigates the properties of the eta-prime meson, including its production cross section dependence on isospin, invariant mass distributions, and an experimental measurement of its total width.

Contribution

It provides new experimental data on eta-prime meson production and decay properties, including a direct measurement of its total width with high mass resolution.

Findings

Isospin dependence of eta-prime production cross section analyzed

Invariant mass distributions compared for different reactions

Total width of eta-prime meson measured at 0.3 MeV/c^2 resolution

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.