Heavy quark transport at RHIC and LHC

Abstract

We calculate the heavy quark evolution in heavy ion collisions and show results for the elliptic flow $v_2$ as well as the nuclear modification factor $R_{AA}$ at RHIC and LHC energies. For the calculation we implement a Langevin approach for the transport of heavy quarks in the UrQMD (hydrodynamics + Boltzmann) hybrid model. As drag and diffusion coefficients we use a Resonance approach for elastic heavy-quark scattering and assume a decoupling temperature of the charm quarks from the hot medium of $130\text{MeV}$. At RHIC energies we use a coalescence approach at the decoupling temperature for the hadronization of the heavy quarks to D-mesons and B-mesons and a sub-following decay to heavy flavor electrons using PYTHIA. At LHC we use an additional fragmentation mechanism to account for the higher transverse momenta reached at higher collision energies.

5 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:1208.1643, arXiv:1211.6912

References in corpus (9)

• Fully integrated transport approach to heavy ion reactions with an intermediate hydrodynamic stage
• Nonperturbative Heavy-Quark Diffusion in the Quark-Gluon Plasma
• Towards an understanding of the RHIC single electron data
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Cited by in corpus (11)

• D meson elliptic flow in non-central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76TeV
• Tomography of the Quark-Gluon-Plasma by Charm Quarks
• Azimuthal anisotropy of D meson production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• D-meson propagation in hot dense matter
• D-meson nuclear modification factor and v${}_2$ in Pb-Pb collisions at the LHC
• Measurement of D-meson production in pp, p-Pb and Pb-Pb collisions with ALICE at the LHC
• Heavy flavor relaxation in a hadronic medium
• Prompt production of D mesons with ALICE at the LHC
• Correlated D-meson decays competing against thermal QGP dilepton radiation
• Mid-rapidity D-meson production in pp, Pb-Pb and p-Pb collisions at the LHC
• Collective excitations in the hot QCD medium and the propagation of Heavy Quarks