Heavy-flavour spectra in high-energy nucleus–nucleus collisions
Abstract
The propagation of the heavy quarks produced in relativistic nucleus–nucleus collisions at RHIC and LHC is studied within the framework of Langevin dynamics in the background of an expanding deconfined medium described by ideal and viscous hydrodynamics. The transport coefficients entering into the relativistic Langevin equation are evaluated by matching the hard-thermal-loop result for soft collisions with a perturbative QCD calculation for hard scatterings. The heavy-quark spectra thus obtained are employed to compute the differential cross sections, the nuclear modification factors RAA and the elliptic-flow coefficients v2 of electrons from heavy-flavor decay.
- Publication:
-
European Physical Journal C
- Pub Date:
- June 2011
- DOI:
- 10.1140/epjc/s10052-011-1666-6
- arXiv:
- arXiv:1101.6008
- Bibcode:
- 2011EPJC...71.1666A
- Keywords:
-
- Heavy Quark;
- Bottom Quark;
- Centrality Class;
- RHIC Energy;
- Hard Thermal Loop;
- High Energy Physics - Phenomenology;
- Nuclear Experiment;
- Nuclear Theory
- E-Print:
- 22 pages, 20 figures