Charm quark evolution in the early stages of heavy-ion collisions

Singh, Mayank; Kurian, Manu; Schenke, Björn; Jeon, Sangyong; Gale, Charles

doi:10.1103/7125-lhbl

Charm quark evolution in the early stages of heavy-ion collisions

Journal Article · Thu Feb 12 00:00:00 EST 2026 · Physical Review. C

DOI:https://doi.org/10.1103/7125-lhbl· OSTI ID:3025661

^[1]; ^[2]; ^[3]; ^[4]; ^[4]

Vanderbilt Univ., Nashville, TN (United States)
Indian Inst. of Technology (Indian School of Mines, Dhanbad (India)
Brookhaven National Laboratory (BNL), Upton, NY (United States)
McGill Univ., Montreal, QC (Canada)

Heavy quarks are predominantly generated at the initial stage of relativistic heavy-ion collisions such that heavy flavor observables have the potential to provide information on the pre-equilibrium medium dynamics. In this study, we investigate the sensitivity of D-meson $$R_{AA}$$ and $$v_2$$ to early-time charm quark dynamics in Pb+Pb collisions at $$\sqrt{s_{NN}}$$=5.02 TeV. We employ the IP-Glasma+MUSIC+UrQMD framework to model the evolution of the bulk medium. Charm quarks are generated using PYTHIA with nuclear parton distribution functions and evolved using Langevin dynamics within MARTINI. We observe that even though there is significant momentum broadening in the earliest stage, D-meson $$R_{AA}$$ and $$v_2$$ are only weakly sensitive to pre-equilibrium interactions.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Vanderbilt Univ., Nashville, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC02-05CH11231; SC0012704; SC0024347

Other Award/Contract Number:: NP-ERCAP0033578
NP-ERCAP0032155
SAPIN-2024-00026
SAPIN-2020-00048
DST/INSPIRE/04/2024/001794

OSTI ID:: 3025661

Alternate ID(s):: OSTI ID: 3022528

Report Number(s):: BNL-229509-2026-JAAM

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 2 Vol. 113; ISSN 2469-9985; ISSN 2469-9993

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Data for "Charm quark evolution in the early stages of heavy-ion collisions" Singh, Mayank; Kurian, Manu; Schenke, Bjoern Zenodo https://doi.org/10.5281/zenodo.17212163	dataset	January 2025

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