Universal quark to gluon ratio in medium-induced parton cascade

Abstract

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 $T\ll \omega \ll E$, 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.

22 pages; 5 figures

References in corpus (9)

• Measurements of the Nuclear Modification Factor for Jets in Pb+Pb Collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV with the ATLAS Detector
• Jet physics in heavy-ion collisions
• Approach to equilibrium in weakly coupled nonabelian plasmas
• Picturing perturbative parton cascades in QCD matter
• Angular structure of the in-medium QCD cascade
• QCD Splitting/Joining Functions at Finite Temperature in the Deep LPM Regime
• Angular distribution of medium-induced QCD cascades
• Nonequilibrium quark production in the expanding QCD plasma
• Nonequilibrium quark production in the expanding QCD plasma

Cited by in corpus (27)

• The First fm/c of Heavy-Ion Collisions
• Deciphering the $z_g$ distribution in ultrarelativistic heavy ion collisions
• The Present and Future of QCD
• Cone size dependence of jet suppression in heavy-ion collisions
• Equilibration of weakly coupled QCD plasmas
• Medium-induced radiative kernel with the Improved Opacity Expansion
• Medium-induced fragmentation and equilibration of highly energetic partons
• Medium-induced cascade in expanding media
• Jet radiation in a longitudinally expanding medium
• Jet thermalization in QCD kinetic theory
• Data-driven quark and gluon jet modification in heavy-ion collisions
• Splitting rates in QCD plasmas from a non-perturbative determination of the momentum broadening kernel $C(q_{\perp })$
• A unified picture of medium-induced radiation
• Multi-partonic medium induced cascades in expanding media
• Parton energy loss in a hard-soft factorized approach
• Minijet quenching in non-equilibrium quark-gluon plasma
• On the breaking of Casimir scaling in jet quenching
• Quenching jets increases their flavor
• Jet evolution in a dense QCD medium
• System of evolution equations for quark and gluon jet quenching with broadening
• Medium-enhanced $c\bar{c}$ radiation
• Transverse momentum broadening of medium-induced cascades in expanding media
• Flavor and path-length dependence of jet quenching from inclusive jet and γ-jet suppression
• Transverse spin polarization as a novel probe of medium-induced transverse-momentum-broadening effect
• Deriving a parton shower for jet thermalization in QCD plasmas
• Jet quenching in expanding medium
• Quark and Gluon Jet Energy Loss