The impact of glasma on heavy quark spectra and correlations

We investigate the effect of the glasma classical color fields, produced in the very early stage of heavy-ion collisions, on the transport of heavy quarks. The glasma fields evolve according to the classical Yang-Mills equations, while the dynamics of heavy quarks is described by Wong’s equations. We numerically solve these equations and extract observables sensitive to the initial glasma stage. The heavy quark nuclear modification factor R AA is affected by the glasma but the effect is moderate compared to the nPDF contribution. Our main finding is that the glasma has a large impact on the azimuthal correlation between QQ pairs, initially produced back-to-back.

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Publication Details

Journal
EPJ Web of Conferences
Published
2025-01-01
DOI
https://doi.org/10.1051/epjconf/202533904013
Primary Topic
High-Energy Particle Collisions Research
Type
article
Field-Weighted Citation Impact
0.00

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article

The impact of glasma on heavy quark spectra and correlations

David I. Müller, Heikki Mäntysaari, T. Lappi, Vincenzo Greco et al.
EPJ Web of Conferences
High-Energy Particle Collisions Research
article

The impact of glasma on heavy quark spectra and correlations

David I. Müller, Heikki Mäntysaari, T. Lappi, Vincenzo Greco, Dana Avramescu
article en

Abstract

We investigate the effect of the glasma classical color fields, produced in the very early stage of heavy-ion collisions, on the transport of heavy quarks. The glasma fields evolve according to the classical Yang-Mills equations, while the dynamics of heavy quarks is described by Wong’s equations. We numerically solve these equations and extract observables sensitive to the initial glasma stage. The heavy quark nuclear modification factor R AA is affected by the glasma but the effect is moderate compared to the nPDF contribution. Our main finding is that the glasma has a large impact on the azimuthal correlation between QQ pairs, initially produced back-to-back.

EPJ Web of ConferencesVol. 339
University of Helsinki (FI), TU Wien (AT), Helsinki Institute of Physics (FI), University of Catania (IT), Instituto de Física Teórica (ES), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud (IT), University of Jyväskylä (FI)
Austrian Science Fund
Openalex Percentile: Top 85%
High-Energy Particle Collisions Research
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The impact of glasma on heavy quark spectra and correlations — David I. Müller, Heikki Mäntysaari, et al. · EPJ Web of Conferences (2025) | TGRS Research Map | TGRS