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Title: Universal quark to gluon ratio in medium-induced parton cascade

Abstract

Here, we investigate the radiative break-up of a highly energetic quark or gluon in a high-temperature QCD plasma. Within an inertial range of momenta T << ω << E, where E denotes the energy of the original hard parton (jet) and T the temperature of of the medium, we find that, as a result of the turbulent nature of the underlying parton cascade, the quark to gluon ratio of the soft fragments tends to a universal constant value that is independent of the initial conditions. We discuss implications of this result to jet quenching physics and the problem of thermalization of the quark-gluon plasma in heavy ion collisions.

Authors:
 [1];  [2]
  1. Univ. of Washington, Seattle, WA (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Univ. of Washington, Seattle, WA (United States); Univ. Bielefeld, Bielefeld (Germany)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1479273
Report Number(s):
BNL-209335-2018-JAAM
Journal ID: ISSN 1029-8479
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2018; Journal Issue: 9; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Heavy Ion Phenomenology; Jets

Citation Formats

Mehtar-Tani, Yacine, and Schlichting, Soeren. Universal quark to gluon ratio in medium-induced parton cascade. United States: N. p., 2018. Web. doi:10.1007/JHEP09(2018)144.
Mehtar-Tani, Yacine, & Schlichting, Soeren. Universal quark to gluon ratio in medium-induced parton cascade. United States. doi:10.1007/JHEP09(2018)144.
Mehtar-Tani, Yacine, and Schlichting, Soeren. Tue . "Universal quark to gluon ratio in medium-induced parton cascade". United States. doi:10.1007/JHEP09(2018)144. https://www.osti.gov/servlets/purl/1479273.
@article{osti_1479273,
title = {Universal quark to gluon ratio in medium-induced parton cascade},
author = {Mehtar-Tani, Yacine and Schlichting, Soeren},
abstractNote = {Here, we investigate the radiative break-up of a highly energetic quark or gluon in a high-temperature QCD plasma. Within an inertial range of momenta T << ω << E, where E denotes the energy of the original hard parton (jet) and T the temperature of of the medium, we find that, as a result of the turbulent nature of the underlying parton cascade, the quark to gluon ratio of the soft fragments tends to a universal constant value that is independent of the initial conditions. We discuss implications of this result to jet quenching physics and the problem of thermalization of the quark-gluon plasma in heavy ion collisions.},
doi = {10.1007/JHEP09(2018)144},
journal = {Journal of High Energy Physics (Online)},
number = 9,
volume = 2018,
place = {United States},
year = {2018},
month = {9}
}

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