Minijet quenching in non-equilibrium quark-gluon plasma

• Verfasst von: Zhou, Fabian [VerfasserIn]
• Verfasst von: Brewer, Jasmine [VerfasserIn]
• Verfasst von: Mazeliauskas, Aleksas [VerfasserIn]
• Titel: Minijet quenching in non-equilibrium quark-gluon plasma
• Verf.angabe: Fabian Zhou, Jasmine Brewer and Aleksas Mazeliauskas
• E-Jahr: 2024
• Jahr: June 28, 2024
• Umfang: 36 S.
• Illustrationen: Illustrationen
• Fussnoten: Gesehen am 12.12.2024
• Titel Quelle: Enthalten in: Journal of high energy physics
• Ort Quelle: Berlin : Springer, 1997
• Jahr Quelle: 2024
• Band/Heft Quelle: (2024), 6, Artikel-ID 214, Seite 1-36
• ISSN Quelle: 1029-8479
• DOI: doi:10.1007/JHEP06(2024)214
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Finite Temperature or Finite Density
• Sach-SW: Jets and Jet Substructure
• Sach-SW: Quark-Gluon Plasma
• K10plus-PPN: 1912186152

Abstract

We study the energy deposition and thermalisation of high-momentum on-shell partons (minijets) travelling through a non-equilibrium Quark-Gluon Plasma using QCD kinetic theory. For thermal backgrounds, we show that the parton energy first flows to the soft sector by collinear cascade and then isotropises via elastic scatterings. In contrast, the momentum deposition from a minijet reaches the equilibrium distribution directly. For expanding non-equilibrium QGP, we study the time for a minijet perturbation to lose memory of its initial conditions, namely, the hydrodynamisation time. We show that the minijet evolution scales well with the relaxation time τR ∝ η/s/T(τ), where T(τ) is the effective temperature and η/s is the viscosity over entropy ratio.