Universal quark to gluon ratio in medium-induced parton cascade

Mehtar-Tani, Yacine; Schlichting, Soeren

doi:10.1007/JHEP09(2018)144

Universal quark to gluon ratio in medium-induced parton cascade

Journal Article · Tue Sep 25 00:00:00 EDT 2018 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP09(2018)144· OSTI ID:1479273

Mehtar-Tani, Yacine ^[1]; Schlichting, Soeren ^[2]

Univ. of Washington, Seattle, WA (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Univ. of Washington, Seattle, WA (United States); Univ. Bielefeld, Bielefeld (Germany)

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.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: SC0012704

OSTI ID:: 1479273

Report Number(s):: BNL--209335-2018-JAAM

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 9 Vol. 2018; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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