First complete numerical solution of BDMPS-Z equations for in-medium QCD splittings, going beyond soft, large-Nc and harmonic-oscillator approximations.
Gluon Radiation off Hard Quarks in a Nuclear Environment: Opacity Expansion
7 Pith papers cite this work. Polarity classification is still indexing.
7
Pith papers citing it
abstract
We study the relation between the Baier-Dokshitzer-Mueller-Peigne-Schiff (BDMPS) and Zakharov formalisms for medium-induced gluon radiation off hard quarks, and the radiation off very few scattering centers. Based on the non-abelian Furry approximation for the motion of hard partons in a spatially extended colour field, we derive a compact diagrammatic and explicitly colour trivial expression for the N-th order term of the kt-differential gluon radiation cross section in an expansion in the opacity of the medium. Resumming this quantity to all orders in opacity, we obtain Zakharov's path-integral expression (supplemented with a regularization prescription). This provides a new proof of the equivalence of the BDMPS and Zakharov formalisms which extends previous arguments to the kt-differential cross section. We give explicit analytical results up to third order in opacity for both the gluon radiation cross section of free incoming and of in-medium produced quarks. The N-th order term in the opacity expansion of the radiation cross section is found to be a convolution of the radiation associated to N-fold rescattering and a readjustment of the probabilities that rescattering occurs with less than N scattering centers. Both informations can be disentangled by factorizing out of the radiation cross section a term which depends only on the mean free path of the projectile. This allows to infer analytical expressions for the totally coherent and totally incoherent limits of the radiation cross section to arbitrary orders in opacity.
citation-role summary
background 1
citation-polarity summary
roles
background 1polarities
background 1representative citing papers
The in-medium antenna gluon spectrum is obtained by numerical solution of Dyson-type equations that fully resum multiple scatterings for Yukawa and HTL rates, without harmonic-oscillator or opacity truncations.
ATLAS observes increasing dijet imbalance with centrality in O+O and Ne+Ne collisions at 5.36 TeV, consistent with medium-induced energy loss in small systems.
Derives Lindblad evolution for color dipole in QCD plasma and demonstrates quasi-factorization of Wigner distribution violated by color decoherence factor controlled by theta_qqbar/theta_c ratio.
A multi-stage CoLBT-hydro simulation with a 2 GeV medium scale reproduces the CMS in-jet EEC and predicts rank- and rapidity-gap-dependent modifications that encode path length and the diffusion wake.
A quantum-circuit framework maps partonic cross-sections for multi-particle QCD processes in media, benchmarked on dipole formation and antenna radiation at leading order.
Including thermal parton collisions via the BGK kernel increases the collisional energy loss of a heavy quark in QGP by ~8% at large velocities for α_s=0.3 compared to the collisionless limit.
citing papers explorer
-
In-medium QCD splittings beyond the soft, large-$N_c$ and harmonic-oscillator approximations all at once
First complete numerical solution of BDMPS-Z equations for in-medium QCD splittings, going beyond soft, large-Nc and harmonic-oscillator approximations.
-
Gluon radiation from a QCD antenna with realistic parton-medium interactions
The in-medium antenna gluon spectrum is obtained by numerical solution of Dyson-type equations that fully resum multiple scatterings for Yukawa and HTL rates, without harmonic-oscillator or opacity truncations.
-
Observation of centrality-dependent dijet transverse momentum imbalance in O+O and Ne+Ne collisions at $\sqrt{s_{NN}}$ = 5.36 TeV with the ATLAS detector
ATLAS observes increasing dijet imbalance with centrality in O+O and Ne+Ne collisions at 5.36 TeV, consistent with medium-induced energy loss in small systems.
-
Open quantum system approach to the transverse momentum broadening of a colour dipole
Derives Lindblad evolution for color dipole in QCD plasma and demonstrates quasi-factorization of Wigner distribution violated by color decoherence factor controlled by theta_qqbar/theta_c ratio.
-
Energy-energy correlators inside single inclusive jets in heavy-ion collisions with CoLBT-hydro model
A multi-stage CoLBT-hydro simulation with a 2 GeV medium scale reproduces the CMS in-jet EEC and predicts rank- and rapidity-gap-dependent modifications that encode path length and the diffusion wake.
-
Quantum simulating multi-particle processes in high energy nuclear physics: dijet production and color (de)coherence
A quantum-circuit framework maps partonic cross-sections for multi-particle QCD processes in media, benchmarked on dipole formation and antenna radiation at leading order.
-
Energy Loss of a Heavy Quark in a Collisional Quark-Gluon Plasma
Including thermal parton collisions via the BGK kernel increases the collisional energy loss of a heavy quark in QGP by ~8% at large velocities for α_s=0.3 compared to the collisionless limit.