Charm quark production in heavy-ion collisions as a signature of pre-equilibrium
Abstract
The relative abundances and kinematic distributions of hadrons containing (anti)charm quarks are key observables for deconfinement, heavy-quark diffusion and hadronization in heavy-ion collisions. The production of (anti)charm quarks is commonly associated to the initial hard scatterings in hadronic collisions. Based on previous studies on dilepton production, we evaluate the (anti)charm quark production from the pre-equilibrium phase. A non-negligible contribution to the overall charm quark production is found albeit large theoretical uncertainties are limiting factors. We conclude that precise total charm production measurements combined with progress on charm production calculations from the initial hard scatterings can be used to infer information on the pre-equilibrium stage.
Versions
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BibTeX
@misc{coquet2026charm,
title = {{Charm quark production in heavy-ion collisions as a signature of pre-equilibrium}},
author = {Maurice Coquet and Thomas Faure and Sören Schlichting and Mika Spier and Michael Winn},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2606.10206},
eprint = {2606.10206},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.10206},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Charm quark production in heavy-ion collisions as a signature of pre-equilibrium
AU - Maurice Coquet
AU - Thomas Faure
AU - Sören Schlichting
AU - Mika Spier
AU - Michael Winn
PY - 2026
DA - 2026/09/09
PB - arXiv
DO - 10.48550/arxiv.2606.10206
UR - https://arxiv.org/abs/2606.10206
AB - The relative abundances and kinematic distributions of hadrons containing (anti)charm quarks are key observables for deconfinement, heavy-quark diffusion and hadronization in heavy-ion collisions. The production of (anti)charm quarks is commonly associated to the initial hard scatterings in hadronic collisions. Based on previous studies on dilepton production, we evaluate the (anti)charm quark production from the pre-equilibrium phase. A non-negligible contribution to the overall charm quark production is found albeit large theoretical uncertainties are limiting factors. We conclude that precise total charm production measurements combined with progress on charm production calculations from the initial hard scatterings can be used to infer information on the pre-equilibrium stage.
ER -