dorsal/arxiv
View SchemaEPOS4 Model Predictions for Global Observables in Pb-Pb Collisions at $\sqrt{s_{NN}}$ = 5.36 TeV
| Authors | Hirak Kumar Koley, Subikash Choudhury, Mitali Mondal |
|---|---|
| Categories | |
| ArXiv ID | 2601.07570vv1 |
| URL | https://arxiv.org/abs/2601.07570 |
| Journal | PoS(EPS-HEP2025)218 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
The study of the Quark-Gluon Plasma (QGP), a deconfined state of nuclear matter, remains a central focus of high-energy heavy-ion collision experiments. The recent operation of the Large Hadron Collider (LHC) in Run 3 at the new center-of-mass energy of $\sqrt{s_{NN}}=5.36$ TeV necessitates theoretical predictions to characterize the energy dependence and bulk properties of the medium. In this study, we present comprehensive EPOS4 model predictions for key global observables in Pb-Pb collisions at $5.36$ TeV. We focus on the centrality dependence of the charged-particle pseudorapidity density ($dN_{ch}/d\eta$), integrated yields ($dN/dy$), mean transverse momentum ($\langle p_{T}\rangle$) for light-flavor hadrons ($\pi^{\pm}, K^{\pm}, p(\bar{p})$), and the charged particle nuclear modification factor ($R_{AA}$). The EPOS4 framework successfully captures the strong mass-dependent rise of $\langle p_{T}\rangle$ with multiplicity, a definitive signature of collective radial flow. Furthermore, the predicted charged hadron $R_{AA}$ demonstrates a clear suppression, consistent with energy loss mechanisms incorporated into the model. By comparing these predictions to existing $5.02$ TeV data, we demonstrate that the EPOS4 model offers a consistent and robust description of heavy-ion dynamics, projecting minimal energy evolution for these bulk and hard-probe observables between the two energies.
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"abstract": "The study of the Quark-Gluon Plasma (QGP), a deconfined state of nuclear matter, remains a central focus of high-energy heavy-ion collision experiments. The recent operation of the Large Hadron Collider (LHC) in Run 3 at the new center-of-mass energy of $\\sqrt{s_{NN}}=5.36$ TeV necessitates theoretical predictions to characterize the energy dependence and bulk properties of the medium. In this study, we present comprehensive EPOS4 model predictions for key global observables in Pb-Pb collisions at $5.36$ TeV. We focus on the centrality dependence of the charged-particle pseudorapidity density ($dN_{ch}/d\\eta$), integrated yields ($dN/dy$), mean transverse momentum ($\\langle p_{T}\\rangle$) for light-flavor hadrons ($\\pi^{\\pm}, K^{\\pm}, p(\\bar{p})$), and the charged particle nuclear modification factor ($R_{AA}$). The EPOS4 framework successfully captures the strong mass-dependent rise of $\\langle p_{T}\\rangle$ with multiplicity, a definitive signature of collective radial flow. Furthermore, the predicted charged hadron $R_{AA}$ demonstrates a clear suppression, consistent with energy loss mechanisms incorporated into the model. By comparing these predictions to existing $5.02$ TeV data, we demonstrate that the EPOS4 model offers a consistent and robust description of heavy-ion dynamics, projecting minimal energy evolution for these bulk and hard-probe observables between the two energies.",
"arxiv_id": "2601.07570",
"authors": [
"Hirak Kumar Koley",
"Subikash Choudhury",
"Mitali Mondal"
],
"categories": [
"hep-ph",
"hep-ex",
"nucl-th"
],
"journal_ref": "PoS(EPS-HEP2025)218",
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "EPOS4 Model Predictions for Global Observables in Pb-Pb Collisions at $\\sqrt{s_{NN}}$ = 5.36 TeV",
"url": "https://arxiv.org/abs/2601.07570",
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