Parton rescattering effect on the charged hadron forward-backward multiplicity correlation in $pp$ collisions at $\sqrt s$=200 GeV

TL;DR

This study investigates how parton rescattering influences the forward-backward multiplicity correlation of charged hadrons in proton-proton collisions at 200 GeV, revealing that rescattering effects vary with pseudorapidity.

Contribution

It introduces a detailed analysis of parton rescattering effects on multiplicity correlations using the PACIAE model, highlighting pseudorapidity-dependent behaviors.

Findings

Rescattering effects increase with rescattering strength in central pseudorapidity.

Final charged hadron distributions differ from initial parton distributions.

Rescattering effects are weaker in outer pseudorapidity regions.

Abstract

The parton rescattering effect on the charged hadron forward-backward multiplicity correlation in $pp$ collisions at $\sqrt s$=200 GeV is studied by a parton and hadron cascade model, PACIAE, based on the PYTHIA model. The calculated multiplicity and pseudorapidity distribution of the final state charged hadron are well compared with experimental data. It turned out that the final state charged hadron pseudorapidity distribution are different from the initial state charged partons. The parton rescattering effect on the charged hadron forward-backward multiplicity correlation increases with increasing parton rescattering strength in the center pseudorapidity region ($|\eta| <1$). However, this effect becomes weaker in the outer pseudorapidity region ($|\eta|> 1$).