In-medium gluon radiation spectrum with all-order resummation of multiple scatterings in longitudinally evolving media

Abstract

Over the past years, there has been a sustained effort to systematically enhance our understanding of medium-induced emissions occurring in the quark-gluon plasma, driven by the ultimate goal of advancing our comprehension of jet quenching phenomena. To ensure meaningful comparisons between these new calculations and experimental data, it becomes crucial to model the interplay between the radiation process and the evolution of the medium parameters, typically described by a hydrodynamical simulation. This step presents particular challenges when dealing with calculations involving the resummation of multiple scatterings, which have been shown to be necessary for achieving an accurate description of the in-medium emission process. In this paper, we extend our numerical calculations of the fully-resummed gluon spectrum to account for longitudinally expanding media. This new implementation allows us to quantitatively assess the accuracy of previously proposed scaling laws that establish a correspondence between an expanding medium and a ``static equivalent''. Additionally, we show that such scaling laws yield significantly improved results when the static reference case is replaced by an expanding medium with the temperature following a simple power-law decay. Such correspondence will enable the application of numerical calculations of medium-induced energy loss in realistic evolving media for a broader range of phenomenological studies.

32 pages, 16 figures, version published in JHEP

References in corpus (23)

• Jet physics in heavy-ion collisions
• The eccentricity in heavy-ion collisions from Color Glass Condensate initial conditions
• Heavy quarks and jets as probes of the QGP
• Finite-size effects on the radiative energy loss of a fast parton in hot and dense strongly interacting matter
• Simple Formula for High-Energy Gluon Bremsstrahlung in a Finite, Expanding Medium
• Medium-induced gluon radiation and colour decoherence beyond the soft approximation
• Ab Initio Coupling of Jets to Collective Flow in the Opacity Expansion Approach
• Jet broadening in dense inhomogeneous matter
• Information field based global Bayesian inference of the jet transport coefficient
• Disentangling Jet Modification in Jet Simulations and in Z+Jet Data
• Jet Broadening in Flowing Matter -- Resummation
• Medium induced gluon spectrum in dense inhomogeneous matter
• Non-perturbative determination of collisional broadening and medium induced radiation in QCD plasmas
• Linear Boltzmann transport for jet propagation in the quark-gluon plasma: Inelastic processes and jet modification
• DREENA-A framework as a QGP tomography tool
• Medium-induced radiation with vacuum propagation in the pre-hydrodynamics phase
• Precise description of medium-induced emissions
• From soft to hard radiation: the role of multiple scatterings in medium-induced gluon emissions
• Splitting rates in QCD plasmas from a non-perturbative determination of the momentum broadening kernel $C(q_{\perp })$
• Asymmetric transverse momentum broadening in an inhomogeneous medium
• Leading order, next-to-leading order, and non-perturbative parton collision kernels: effects in static and evolving media
• Transverse momentum broadening of medium-induced cascades in expanding media
• Multi-particle correlations and KNO scaling in the medium-induced jet evolution