Measurement of Inclusive Monmentum Spectra and Multiplicity Distributions of Charged Particles at $\sqrt{s}\sim 2-5$ GeV

TL;DR

This paper reports measurements of charged particle momentum spectra and multiplicity distributions at center of mass energies between 2.2 and 4.8 GeV, comparing results with high-energy experiments and QCD predictions.

Contribution

It provides new experimental data on inclusive spectra and multiplicity distributions at intermediate energies, extending the understanding of particle production in this energy range.

Findings

Measured momentum spectra and multiplicity distributions at multiple energies.

Reported values of the second binomial moment, R_2.

Compared results with high-energy experiments and QCD calculations.

Abstract

Inclusive momentum spectra and multiplicity distributions of charged particles measured with BESII detector at center of mass energies of 2.2,2.6,3.0,3.2,4.6 and 4.8 GeV are presented. Values of the second binomial moment, $R_2$, obtained from the multiplicity distributions are reported. These results are compared with both experimental data from high energy $e^+e^-$, $ep$ and $p\bar{p}$ experiments and QCD calculations.