Comparative analysis of C-moments using different phenomenological models

TL;DR

This paper compares different phenomenological models for charged particle multiplicity distributions in proton-antiproton collisions across various energies, highlighting which models best fit experimental data and analyzing how moments vary with energy and phase space.

Contribution

It provides a comparative analysis of C-moments using multiple models and evaluates their agreement with experimental data across different energies and phase space slices.

Findings

Models other than BP show better agreement with data.

C-moments vary with pseudorapidity window size and energy.

Differences observed between ar{p}p and pp interactions at same energies.

Abstract

Analysis of normalised C-moments of multiplicity distribution calculated from the different phenomenological models, the Bialas-Praszalowics~(BP) model, modified negative binomial and the superposed SGD at different center of mass~(cms) energies is presented.~The analysis covers a range of energies~(200-900 GeV) of $\bar{p}p$ collisions in restricted phase space slices.~A comparison of different models to the experimental data on charged particle multiplicity spectra from the $\bar{p}p$ annihilation in five pseudorapidity windows is reported.~The comparison shows that the two approaches other than the BP model are in better agreement to the data.~Results on variation of moments with pseudorapidity window size and with center of mass energy and observations from such a study in $\bar{p}p$ annihilation and $pp$ interactions at the same cms energy are also presented.