Diffusion of heavy quarks in the early stage of high-energy nuclear collisions
We study the diffusion of heavy quarks in the early stage of highenergy nuclear collisions. The pre-equilibrium stage of relativistic heavy-ion collisions, commonly known as Glasma, evolves according to the classical Yang-Mills equations. Heavy quarks are coupled to the evolving Glasma fields via re...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2025-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2025/01/epjconf_sqm2024_02002.pdf |
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| _version_ | 1832098409360654336 |
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| author | Pooja Das Santosh Kumar Greco Vincenzo Ruggieri Marco |
| author_facet | Pooja Das Santosh Kumar Greco Vincenzo Ruggieri Marco |
| author_sort | Pooja |
| collection | DOAJ |
| description | We study the diffusion of heavy quarks in the early stage of highenergy nuclear collisions. The pre-equilibrium stage of relativistic heavy-ion collisions, commonly known as Glasma, evolves according to the classical Yang-Mills equations. Heavy quarks are coupled to the evolving Glasma fields via relativistic kinetic theory. We compute the momentum broadening, σp as well as the angular momentum fluctuations of heavy quarks in the early stage, which turn out to be anisotropic due to the anisotropy of the background gluon fields. We observe that σp ∝ t2 at very initial times. This non-Markovian diffusion of heavy quarks in the early stages is explained by the memory effect present in the gluon fields. |
| format | Article |
| id | doaj-art-57520c9e526c476e8a48500935d00e56 |
| institution | Kabale University |
| issn | 2100-014X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj-art-57520c9e526c476e8a48500935d00e562025-02-05T10:53:01ZengEDP SciencesEPJ Web of Conferences2100-014X2025-01-013160200210.1051/epjconf/202531602002epjconf_sqm2024_02002Diffusion of heavy quarks in the early stage of high-energy nuclear collisionsPooja0Das Santosh Kumar1Greco Vincenzo2Ruggieri Marco3Department of Physics, University of Jyväskylä, P.O. Box 35, 40014 University of JyväskyläSchool of Physical Sciences, Indian Institute of Technology GoaDepartment of Physics and Astronomy "Ettore Majorana", University of CataniaDepartment of Physics and Astronomy "Ettore Majorana", University of CataniaWe study the diffusion of heavy quarks in the early stage of highenergy nuclear collisions. The pre-equilibrium stage of relativistic heavy-ion collisions, commonly known as Glasma, evolves according to the classical Yang-Mills equations. Heavy quarks are coupled to the evolving Glasma fields via relativistic kinetic theory. We compute the momentum broadening, σp as well as the angular momentum fluctuations of heavy quarks in the early stage, which turn out to be anisotropic due to the anisotropy of the background gluon fields. We observe that σp ∝ t2 at very initial times. This non-Markovian diffusion of heavy quarks in the early stages is explained by the memory effect present in the gluon fields.https://www.epj-conferences.org/articles/epjconf/pdf/2025/01/epjconf_sqm2024_02002.pdf |
| spellingShingle | Pooja Das Santosh Kumar Greco Vincenzo Ruggieri Marco Diffusion of heavy quarks in the early stage of high-energy nuclear collisions EPJ Web of Conferences |
| title | Diffusion of heavy quarks in the early stage of high-energy nuclear collisions |
| title_full | Diffusion of heavy quarks in the early stage of high-energy nuclear collisions |
| title_fullStr | Diffusion of heavy quarks in the early stage of high-energy nuclear collisions |
| title_full_unstemmed | Diffusion of heavy quarks in the early stage of high-energy nuclear collisions |
| title_short | Diffusion of heavy quarks in the early stage of high-energy nuclear collisions |
| title_sort | diffusion of heavy quarks in the early stage of high energy nuclear collisions |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2025/01/epjconf_sqm2024_02002.pdf |
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