Abstract
A multi-step setup for heavy-flavor studies in high-energy nucleus-nucleus (AA) and proton-nucleus (pA) collisions is presented. The propagation of the heavy quarks in the medium is described in a framework provided by the relativistic Langevin equation, here solved using weak-coupling transport coefficients. Successively, the heavy quarks hadronize in the medium. We compute the nuclear modification factor and the elliptic flow parameter of the final Dmesons both in AA and in pA collisions and compare our results to experimental data.
Highlights
IntroductionThe primary goal of the ongoing heavy-ion collision experiments at the Relativistic Heavy Ion Collider (RHIC) and at the Large Hadron Collider (LHC) is to create and study a new state of matter, the Quark-Gluon Plasma (QGP), where quarks and gluons are no longer confined, but can freely move over distances much larger than the typical hadronic size
The primary goal of the ongoing heavy-ion collision experiments at the Relativistic Heavy Ion Collider (RHIC) and at the Large Hadron Collider (LHC) is to create and study a new state of matter, the Quark-Gluon Plasma (QGP), where quarks and gluons are no longer confined, but can freely move over distances much larger than the typical hadronic size.A nucleus-nucleus collision is a very complicated process undergoing several stages: right after the first interaction between the incident nuclei a dense system of partons is produced, which shortly reach a thermal equilibrium and form the QGP
The time step used in our simulation is Δt = 0.02 fm/c, for the deconfining temperature Tdec we have tested two values: Tdec = 155 MeV and Tdec = 170 MeV, allowing the heavy quarks to form bound states with light quarks which may survive, in a small temperature range, in the deconfined phase [18]
Summary
The primary goal of the ongoing heavy-ion collision experiments at the Relativistic Heavy Ion Collider (RHIC) and at the Large Hadron Collider (LHC) is to create and study a new state of matter, the Quark-Gluon Plasma (QGP), where quarks and gluons are no longer confined, but can freely move over distances much larger than the typical hadronic size. A nucleus-nucleus collision is a very complicated process undergoing several stages: right after the first interaction between the incident nuclei (or proton and nucleus) a dense system of partons is produced, which shortly reach a thermal equilibrium (at least locally) and form the QGP. It expands, cools down and decades into a system of interacting hadrons. We present our first (preliminary) results for proton-nucleus (pA) collisions at LHC energies
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