Charged pion production in C+C and Ar+KCl collisions measured with HADES

TL;DR

This paper reports on charged pion production in C+C and Ar+KCl collisions at GeV energies, measuring transverse momentum distributions and comparing results with models and previous data to enhance understanding of particle production in nuclear collisions.

Contribution

It provides the first measurement of transverse momentum distributions of pi+- mesons in C+C collisions at these energies and compares results with transport models and existing data.

Findings

First measurement of pi+- transverse momentum distributions in C+C collisions.

Comparison of experimental data with transport models and previous experiments.

Insights into particle production mechanisms in nuclear collisions.

Abstract

Results of a study of charged pion production in 12C+12C collisions at incident beam energies of 1A GeV and 2A GeV, and 40Ar+natKCl at 1.76AGeV, using the spectrometer HADES at GSI, are presented. We have performed a measurement of the transverse momentum distributions of pi+- mesons covering a fairly large rapidity interval, in case of the C+C collision system for the first time. The yields, transverse mass and angular distributions are compared with a transport model as well as with existing data from other experiments.