Jet quenching in glasma

We discuss the transverse momentum broadening of hard probes traversing an evolving glasma, which is the earliest phase of the matter produced in relativistic heavy-ion collisions. The coefficient qˆ is calculated using the Fokker-Planck equation, and an expansion in the proper time τ which is appli...

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Main Authors: Margaret E. Carrington, Alina Czajka, Stanisław Mrówczyński
Format: Article
Language:English
Published: Elsevier 2022-11-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269322005986
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author Margaret E. Carrington
Alina Czajka
Stanisław Mrówczyński
author_facet Margaret E. Carrington
Alina Czajka
Stanisław Mrówczyński
author_sort Margaret E. Carrington
collection DOAJ
description We discuss the transverse momentum broadening of hard probes traversing an evolving glasma, which is the earliest phase of the matter produced in relativistic heavy-ion collisions. The coefficient qˆ is calculated using the Fokker-Planck equation, and an expansion in the proper time τ which is applied to describe the temporal evolution of the glasma. The correlators of the chromodynamic fields that determine the Fokker-Planck collision terms, which in turn provide qˆ, are computed to fifth order in τ. The momentum broadening is shown to rapidly grow in time and reach a magnitude of several GeV2/fm. We show that the transient pre-equilibrium phase provides a contribution to the energy loss of hard probes which is comparable to that of the long lasting, hydrodynamically evolving, equilibrium phase.
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spelling doaj.art-afceca9e12754c8d9e48cb2aefb6de622022-12-22T03:25:58ZengElsevierPhysics Letters B0370-26932022-11-01834137464Jet quenching in glasmaMargaret E. Carrington0Alina Czajka1Stanisław Mrówczyński2Department of Physics, Brandon University, Brandon, Manitoba R7A 6A9, Canada; Winnipeg Institute for Theoretical Physics, Winnipeg, Manitoba, CanadaNational Centre for Nuclear Research, ul. Pasteura 7, PL-02-093 Warsaw, PolandNational Centre for Nuclear Research, ul. Pasteura 7, PL-02-093 Warsaw, Poland; Institute of Physics, Jan Kochanowski University, ul. Uniwersytecka 7, PL-25-406 Kielce, Poland; Corresponding author.We discuss the transverse momentum broadening of hard probes traversing an evolving glasma, which is the earliest phase of the matter produced in relativistic heavy-ion collisions. The coefficient qˆ is calculated using the Fokker-Planck equation, and an expansion in the proper time τ which is applied to describe the temporal evolution of the glasma. The correlators of the chromodynamic fields that determine the Fokker-Planck collision terms, which in turn provide qˆ, are computed to fifth order in τ. The momentum broadening is shown to rapidly grow in time and reach a magnitude of several GeV2/fm. We show that the transient pre-equilibrium phase provides a contribution to the energy loss of hard probes which is comparable to that of the long lasting, hydrodynamically evolving, equilibrium phase.http://www.sciencedirect.com/science/article/pii/S0370269322005986
spellingShingle Margaret E. Carrington
Alina Czajka
Stanisław Mrówczyński
Jet quenching in glasma
Physics Letters B
title Jet quenching in glasma
title_full Jet quenching in glasma
title_fullStr Jet quenching in glasma
title_full_unstemmed Jet quenching in glasma
title_short Jet quenching in glasma
title_sort jet quenching in glasma
url http://www.sciencedirect.com/science/article/pii/S0370269322005986
work_keys_str_mv AT margaretecarrington jetquenchinginglasma
AT alinaczajka jetquenchinginglasma
AT stanisławmrowczynski jetquenchinginglasma