Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-07-23
J.Phys.Conf.Ser.270:012029,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 3 figures, Talk given at "Hot Quarks 2010", 21th-26th June 2010
Scientific paper
10.1088/1742-6596/270/1/012029
The stochastic dynamics of heavy quarks in the fireball produced in heavy-ion collisions is followed through numerical simulations based on the Langevin equation. The modification of the final p_T spectra (R_AA) of c and b quarks, hadrons and single-electrons with respect to pp collisions is studied. The transport coefficients are evaluated treating separately the contribution of soft and hard collisions. The initial heavy-quark spectra are generated according to NLO-pQCD, accounting for nuclear effects through recent nPDFs. The evolution of the medium is obtained from the output of two hydro-codes (ideal and viscous). The heavy-quark fragmentation into hadrons and their final semileptonic decays are implemented according to up to date experimental data. A comparison with RHIC data for non-photonic electron spectra is given.
Alberico Wanda M.
Beraudo Andrea
Molinari Anna
Monteno M.
Nardi Marzia
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