Medium-induced gluon branching

Abstract

We study the evolution of an energetic jet which radiates gluons while propagating through a dense QCD medium modeled as a random distribution of color sources. Motivated by the heavy ion experimental program at the LHC, we focus on the medium-induced radiation of (relatively) soft gluons, which are abundantly emitted at large angles and thus can transport a small fraction of the jet energy far away from the jet axis. We perform a complete calculation of the medium-induced gluon branching in the regime where the gluons that take part in the branching undergo multiple soft scattering with the medium. We extend the BDMPSZ theory of radiative energy loss by including the transverse momentum dependence in the kernel that describes the branching and by analyzing the correlations between the two offspring gluons. We demonstrate that these gluons lose color coherence with respect to each other over a time scale that is comparable to the duration of the branching. It follows that interference effects between successive emissions are suppressed, a necessary ingredient for a description of multiple emission of soft gluons by a probabilistic, branching process.

51 pages, 14 figures

References in corpus (7)

• Antiangular Ordering of Gluon Radiation in QCD Media
• Q-PYTHIA: a medium-modified implementation of final state radiation
• The radiation pattern of a QCD antenna in a dense medium
• A local Monte Carlo framework for coherent QCD parton energy loss
• First Direct Measurement of Jets in $\sqrt{s_{NN}}=200$ GeV Heavy Ion Collisions by STAR
• Relating the description of gluon production in pA collisions and parton energy loss in AA collisions
• High energy pA collisions in the Color Glass Condensate approach

Cited by in corpus (87)

• Extraction of Heavy-Flavor Transport Coefficients in QCD Matter
• Modification of jet shapes in PbPb collisions at sqrt(s[NN]) = 2.76 TeV
• New picture of jet quenching dictated by color coherence
• Medium-Induced QCD Cascade: Democratic Branching and Wave Turbulence
• Jet Structure in Heavy Ion Collisions
• Vacuum-like jet fragmentation in a dense QCD medium
• Radiative pT-broadening of high-energy quarks and gluons in QCD matter
• Renormalization of the jet-quenching parameter
• Probabilistic picture for medium-induced jet evolution
• Jet Quenching from QCD Evolution
• Groomed jets in heavy-ion collisions: sensitivity to medium-induced bremsstrahlung
• Energy versus centrality dependence of the jet quenching parameter $\hat{q}$ at RHIC and LHC: a new puzzle?
• High Gluon Densities in Heavy Ions Collisions
• Interpreting Single Jet Measurements in Pb+Pb Collisions at the LHC
• Angular structure of the in-medium QCD cascade
• Deciphering the $z_g$ distribution in ultrarelativistic heavy ion collisions
• A complete set of in-medium splitting functions to any order in opacity
• Medium-induced gluon radiation and colour decoherence beyond the soft approximation
• Parametric estimate of the relative photon yields from the Glasma and the Quark-Gluon Plasma in heavy-ion collisions
• Medium-induced gluon radiation with full resummation of multiple scatterings for realistic parton-medium interactions
• Ab Initio Coupling of Jets to Collective Flow in the Opacity Expansion Approach
• Quark branching in QCD matter to any order in opacity beyond the soft gluon emission limit
• The non-linear evolution of jet quenching
• Revisiting transverse momentum broadening in dense QCD media
• Cone size dependence of jet suppression in heavy-ion collisions
• Angular distribution of medium-induced QCD cascades
• Gluon bremsstrahlung in finite media beyond multiple soft scattering approximation
• Jet broadening in dense inhomogeneous matter
• The LPM effect in sequential bremsstrahlung 2: factorization
• Radiative energy loss of neighboring subjets
• Improved opacity expansion at NNLO for medium induced gluon radiation
• Medium induced jet broadening in a quantum computer
• Jet Broadening in Flowing Matter -- Resummation
• Effect of magnetic field on the photon radiation from quark-gluon plasma in heavy ion collisions
• Medium-induced cascade in expanding media
• Medium induced gluon spectrum in dense inhomogeneous matter
• Mapping collinear in-medium parton splittings
• Jet radiation in a longitudinally expanding medium
• Measurement of suppression of large-radius jets and its dependence on substructure in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector
• Scattering and gluon emission in a color field: a light-front Hamiltonian approach
• Running coupling effects in the evolution of jet quenching
• Quenching effects in the cumulative jet spectrum
• Jet thermalization in QCD kinetic theory
• A modified in-medium evolution equation with color coherence
• Precise description of medium-induced emissions
• Coherence phenomena between initial and final state radiation in a dense QCD medium
• A unified picture of medium-induced radiation
• Splitting rates in QCD plasmas from a non-perturbative determination of the momentum broadening kernel $C(q_{\perp })$
• Multiparticle production in proton-nucleus collisions beyond eikonal accuracy
• The medium-modified $g\to c\bar{c}$ splitting function in the BDMPS-Z formalism
• Some Aspects of the Theory of Heavy Ion Collisions
• Universal scaling dependence of QCD energy loss from data driven studies
• On the momentum broadening of in-medium jet evolution using a light-front Hamiltonian approach
• On the breaking of Casimir scaling in jet quenching
• Color randomization of fast gluon-gluon pairs in the quark-gluon plasma
• Exploring the properties of the phases of QCD matter - research opportunities and priorities for the next decade
• Event-by-event fluctuations in the medium-induced jet evolution
• Wilson line correlators beyond the large-$N_c$
• Thermalization of mini-jets in a quark-gluon plasma
• Higher-order corrections to heavy-quark jet quenching
• Color coherence in a heavy quark antenna radiating gluons inside a QCD medium
• Quantum to classical parton dynamics in QCD media
• Di-jet asymmetry and wave turbulence
• Jet evolution in a dense QCD medium
• Extracting $\hat{q}$ in event-by-event hydrodynamics and the centrality/energy puzzle
• Transverse momentum broadening of medium-induced cascades in expanding media
• System of evolution equations for quark and gluon jet quenching with broadening
• Medium-induced gluon radiation beyond the eikonal approximation
• Energy Correlators Beyond Angles
• Nonlocal wave turbulence in non-Abelian plasmas
• Medium-induced jet evolution: wave turbulence and energy loss
• In-medium gluon radiation spectrum with all-order resummation of multiple scatterings in longitudinally evolving media
• Multi-particle correlations and KNO scaling in the medium-induced jet evolution
• Piecewise Linear Wilson lines
• Theoretical Developments in QCD Jet Energy Loss
• A new approach to piecewise linear Wilson lines
• Exploiting $\nu$-dependence of projected energy correlators in HICs
• Predictions for photon-jet correlations at forward rapidities in heavy-ion collisions
• QCD theory overview
• Probabilistic picture of in-medium jet evolution
• Theory overview of Heavy Ion collisions
• Recent progress on the understanding of the medium-induced jet evolution and energy loss in pQCD
• Jet evolution in a quantum computer: quark and gluon dynamics
• Adding vacuum branching to jet evolution in a dense medium
• Energy loss and (de)coherence effects beyond eikonal approximation
• In-medium parton branching beyond eikonal approximation
• Quantum simulating multi-particle processes in high energy nuclear physics: dijet production and color (de)coherence