Elastic and radiative heavy quark interactions in ultra-relativistic heavy-ion collisions

Abstract

Elastic and radiative heavy quark interactions with light partons are studied with the partonic transport description BAMPS (Boltzmann Approach to MultiParton Scatterings). After calculating the cross section of radiative processes for finite masses in the improved Gunion-Bertsch approximation and verifying this calculation by comparing to the exact result, we study elastic and radiative heavy quark energy loss in a static medium of quarks and gluons. Furthermore, the full 3+1D space-time evolution of gluons, light quarks, and heavy quarks in ultra-relativistic heavy-ion collisions at the BNL Relativistic Heavy-Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC) are calculated with BAMPS including elastic and radiative heavy flavor interactions. Treating light and heavy particles on the same footing in the same framework, we find that the experimentally measured nuclear modification factor of charged hadrons and D mesons at the LHC can be simultaneously described. In addition, we calculate the heavy flavor evolution with an improved screening procedure from hard-thermal-loop calculations and confront the results with experimental data of the nuclear modification factor and the elliptic flow of heavy flavor particles at RHIC and LHC.

18 pages, 18 figures

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• Event-shape engineering for the D-meson elliptic flow in mid-central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Nonequilibrium photon production in partonic transport simulations
• Heavy quark transport coefficients in a viscous QCD medium with collisional and radiative processes
• Fluid dynamics of charm quarks in the quark--gluon plasma
• Improvement of heavy flavor productions in a multi-phase transport model updated with modern nPDFs
• Magnetic field influence on the early time dynamics of heavy-ion collisions
• Constraining the equation of state with heavy quarks in the quasi-particle model of QCD matter
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• INFN What Next: Ultra-relativistic Heavy-Ion Collisions
• Nonperturbative Heavy-Flavor Transport Approach for Hot QCD Matter
• Measurement of the D-meson nuclear modification factor and elliptic flow in Pb-Pb collisions at $\sqrt{s_{\text{NN}}}$ = 5.02 TeV with ALICE at the LHC
• Interactions between heavy quarks and tilted QGP fireballs in 200 AGeV Au+Au collisions
• Transport Theory of Heavy Flavor in Relativistic Nuclear Collisions
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• Recent results on heavy flavour in small and large systems from ALICE
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