Pseudorapidity dependence of charged particles production in non-single diffractive $pp$ collisions in the PACIAE 4.0 model

TL;DR

This paper uses the PACIAE 4.0 model to simulate non-single diffractive proton-proton collisions at various energies, successfully reproducing experimental data and validating the model's reliability across different conditions.

Contribution

The study demonstrates that PACIAE 4.0 can accurately simulate NSD $pp$ collisions at multiple energies using a single parameter set, showing its effectiveness as a predictive tool.

Findings

Good agreement with CMS data on pseudorapidity densities

Accurate transverse momentum spectra reproduction

Single parameter set effective across energies

Abstract

Studying experimental observables is a key benchmark for validating theoretical models in high energy physics. In this work, we employ the PACIAE 4.0 model to simulate non-single diffractive proton-proton ($pp$) collisions at center-of-mass energies of 0.9, 2.36, and 7 TeV, comparing the results with Compact Muon Solenoid (CMS) experimental data on charged-particle pseudorapidity densities and transverse momentum spectra across different pseudorapidity bins, respectively. Our results show good agreement with the CMS data, particularly only using a single set of parameters for all collision energies. This demonstrates that the PACIAE 4.0 model can serve as a reliable tool for systematically studying the physics of NSD $pp$ collisions.