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arXiv · 2508.05258

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

Z. Xie·A. K. Lei·H. Zheng·W. C. Zhang·D. M. Zhou·Z. L. She·Y. L. Yan·B. H. Sa
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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.

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Z. Xie, A. K. Lei, H. Zheng, W. C. Zhang, D. M. Zhou, Z. L. She, Y. L. Yan, B. H. Sa. 2025-08-07. Pseudorapidity dependence of charged particles production in non-single diffractive $pp$ collisions in the PACIAE 4.0 model. https://arxiv.org/abs/2508.05258

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