Title: Linearized Boltzmann-Langevin model for heavy quark transport in hot and dense QCD matter

Journal Article · · Physical Review C
 [1];  [2];  [2]
  1. Duke Univ., Durham, NC (United States); DOE/OSTI
  2. Duke Univ., Durham, NC (United States)
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In relativistic heavy-ion collisions, the production of heavy quarks at large transverse momenta is strongly suppressed compared to proton-proton collisions. In addition, an unexpectedly large azimuthal anisotropy was observed for the emission of charmed hadrons in noncentral collisions. Both observations pose challenges to the theoretical understanding of the coupling between heavy quarks and the quark-gluon plasma produced in these collisions. Transport models for the evolution of heavy quarks in a QCD medium offer the opportunity to study these effects; two of the most successful approaches are based on the linearized Boltzmann transport equation and the Langevin equation. In this work, we develop a hybrid transport model that combines the strengths of both of these approaches: Heavy quarks scatter with medium partons using matrix-elements calculated in perturbative QCD, while between these discrete hard scatterings they evolve using a Langevin equation with empirical transport coefficients to capture the nonperturbative soft part of the interaction. With the hybrid transport model coupled to a state-of-the-art event-by-event bulk evolution model based on 2+1D relativistic viscous fluid dynamics, we study the azimuthal anisotropy and nuclear modification factor of heavy quarks in Pb+Pb collisions at √s = 5.02 TeV. The parameters related to heavy-flavor transport are calibrated using a Bayesian analysis comparing them to available D -meson and B -meson data at the Large Hadron Collider. Lastly, using the calibrated model, we study the implications on heavy-flavor transport properties and predict observables.

Research Organization:
Duke Univ., Durham, NC (United States)
Sponsoring Organization:
National Science Foundation; USDOE Office of Science (SC)
Grant/Contract Number:
FG02-05ER41367
OSTI ID:
1609632
Journal Information:
Physical Review C, Journal Name: Physical Review C Journal Issue: 6 Vol. 98; ISSN PRVCAN; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (9)

Modified Boltzmann approach for modeling the splitting vertices induced by the hot QCD medium in the deep Landau-Pomeranchuk-Migdal region journal December 2019
Quarkonium inside the quark-gluon plasma: Diffusion, dissociation, recombination, and energy loss journal July 2019
Quarkonium in-medium transport equation derived from first principles journal May 2019
Factorization of Jet Cross Sections in Heavy-Ion Collisions journal June 2019
Measurement of Azimuthal Anisotropy of Muons from Charm and Bottom Hadrons in p p Collisions at s = 13     TeV with the ATLAS Detector journal February 2020
Diffusion of charm quarks in jets in high-energy heavy-ion collisions journal September 2019
Quarkonium In-Medium Transport Equation Derived from First Principles text January 2018
Quarkonium inside Quark-Gluon Plasma: Diffusion, Dissociation, Recombination and Energy Loss text January 2018
Factorization of Jet Cross Sections in Heavy-Ion Collisions text January 2019

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
hard scattering
jets & heavy flavor physics
physics
relativistic heavy-ion collisions
transport phenomena