Parton energy loss in a hard-soft factorized approach

Abstract

An energetic parton travelling through a quark-gluon plasma loses energy via occasional hard scatterings and frequent softer interactions. Whether or not these interactions admit a perturbative description, the effect of the soft interactions can be factorized and encoded in a small number of transport coefficients. In this work, we present a hard-soft factorized parton energy loss model which combines a stochastic description of soft interactions and rate-based modelling of hard scatterings. We introduce a scale to estimate the regime of validity of the stochastic description, allowing for a better understanding of the model's applicability at small and large coupling. We study the energy and fermion-number cascade of energetic partons as an application of the model.

25 pages, 21 figures, match published version

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Cited by in corpus (7)

• Quantum kinetic theory for spin transport of quarks with background chromo-electromagnetic fields
• Classical vs quantum corrections to jet broadening in a weakly-coupled Quark-Gluon Plasma
• Hard jet substructure in a multistage approach
• Impact of chiral asymmetry and magnetic field on passage of an energetic test parton in a QCD medium
• Measurement of ${\Xi }_c^{+}$ production in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV at LHCb
• Measurement of $\varphi (1020)$ meson production in fixed-target $\text{p}$Ne collisions at $\sqrt{s_{NN}}$ = 68.5 GeV
• Transport properties of the QCD medium