Heavy flavour in nucleus-nucleus collisions at RHIC and LHC: a Langevin approach
1 Physics Department, Theory Unit, CERN, CH-1211 Genève 23, Switzerland
2 Istituto Nazionale di Fisica Nucleare, Sezione di Torino, via P.Giuria 1, I-10125 Torino, Italy
3 Dipartimento di Fisica dell’Università di Torino, via P.Giuria 1, I-10125 Torino, Italy
a e-mail: Andrea.Beraudo@cern.ch
Published online: 20 March 2014
A snapshot of the results for heavy-flavour observables in heavy-ion (AA) collisions at RHIC and LHC obtained with our transport calculations is displayed. The initial charm and beauty production is simulated through pQCD tools (POWHEG+PYTHIA) and is validated through the comparison with data from pp collisions. The propagation of c and b quarks in the medium formed in heavy-ion collisions is studied through a transport setup based on the relativistic Langevin equation. With respect to past works we perform a more systematic study, providing results with different choices of transport coefficients, either from weak-coupling calculations or from lattice-QCD simulations. Our findings are compared to a rich set of experimental data (D-mesons, non-photonic electrons, non-prompt J/ψ’s) which have meanwhile become accessible.
© Owned by the authors, published by EDP Sciences, 2014