Relativistic diffusion model for hadron production in p -Pb collisions at energies available at the CERN Large Hadron Collider

Schulz, Philipp; Wolschin, Georg

doi:10.1103/PhysRevC.110.044910

Title: Relativistic diffusion model for hadron production in $p$ -Pb collisions at energies available at the CERN Large Hadron Collider

Journal Article · 31 October 2024 · Physical Review. C

DOI: https://doi.org/10.1103/PhysRevC.110.044910 · OSTI ID:2475693

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We investigate charged-hadron production in relativistic heavy-ion collisions of asymmetric systems within a nonequilibrium-statistical framework. Calculated centrality-dependent pseudorapidity distributions for p-Pb collisions at $\sqrt{s_{NN}} = 5.02$ and 8.16 TeV are compared with data from the Large Hadron Collider. Our approach combines a relativistic diffusion model with formulations based on quantum chromodynamics while utilizing numerical solutions of a Fokker-Planck equation to account for the shift and broadening of the fragmentation sources for particle-production with respect to the stopping (net-baryon) rapidity distributions. To represent the centrality dependence of charged-hadron production in asymmetric systems over a broad region of pseudorapidities, the consideration and precise modeling of the fragmentation sources, along with the central gluon-gluon source, is found to be essential. Specifically, this results in an inversion of the particle-production amplitude from backward to forward dominance when transitioning from central to peripheral collisions, in agreement with recent ATLAS and ALICE p-Pb data at $\sqrt{s_{NN}} = 5.02 T e V$ . Published by the American Physical Society 2024

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Sponsoring Organization:: USDOE

OSTI ID:: 2475693

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 4 Vol. 110; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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