Abstract
A multi-step setup for heavy-flavor studies in high-energy nucleus-nucleus (AA) collisions — addressing within a comprehensive framework the initial QQ produc- tion, the propagation in the hot medium until decoupling and the final hadronization and decays — is presented. The propagation of the heavy quarks in the medium is described in a framework provided by the relativistic Langevin equation and the corresponding numerical results are compared to experimental data from RHIC and the LHC. In partic- ular, outcomes for the nuclear modification factor RAA and for the elliptic flow v2 of D/B mesons, heavy-flavor electrons and non-prompt J/ψ's are displayed.
Highlights
The purpose of our work is to provide a comprehensive setup for the study of heavy-flavor observables in high-energy hadronic and nuclear (AA) collisions, from the QQ production, in hard nucleonnucleon collisions, to the detection in the experimental apparatus.The interest in heavy quarks for heavy-ion phenomenology lies in the fact that, being produced in the first instants, they allow a tomography of the medium formed in high-energy AA collisions, the Quark Gluon Plasma (QGP)
The main goal of our work is to study medium effects on heavy-flavor observables in AA collisions, one needs first of all to validate the tools employed in simulating the initial QQ production through a comparison with the experimental data collected in pp collisions
This section will present a selection of our results, compared with experimental data obtained at RHIC and LHC energies
Summary
The purpose of our work is to provide a comprehensive setup for the study of heavy-flavor observables in high-energy hadronic (pp) and nuclear (AA) collisions, from the QQ production, in hard nucleonnucleon collisions, to the detection in the experimental apparatus. The interest in heavy quarks for heavy-ion phenomenology lies in the fact that, being produced in the first instants, they allow a tomography of the medium formed in high-energy AA collisions, the Quark Gluon Plasma (QGP). Because of the large mass, their initial production is a shortdistance process described by pQCD. Differences in the final observables with respect to the pp and pA benchmark reflect the presence of a dense medium formed in the collision and allow us to test its properties
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