Heavy Quark Production from Relativistic Heavy Ion Collisions

Abstract

We study the production of heavy quarks, charm at BNL-RHIC ($\sqrt{s}$=200 GeV/nucleon) and CERN-LHC ($\sqrt{s}$=5.5 TeV/nucleon) and bottom at CERN-LHC from heavy ions colliding at relativistic energies. We consider initial fusion of gluons (and quark- anti-quark annihilation), pre-thermal parton interactions and interactions in thermalized quark gluon plasma. We also consider free-streaming partons as another extreme and compare the results with those from a thermalized plasma of partons. The pre-thermal contribution is calculated by considering interaction among partons having large transverse momenta (jet-partons) after the initial interaction, and from passage of these partons through a thermalized quark gluon plasma. Charm production from pre-thermal processes is found to be comparable to that from prompt (initial) interactions at LHC. It is suggested that this may have important implications for the study of nuclear modification factor, R${}_{\mathrm{AA}}$ as well as for back-to-back correlation of heavy quarks and production of dileptons having a large mass.

Corrected figures, added discussion on production of bottom at RHIC, 19 pages, 6 figures, to appear in J. Phys. G

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Cited by in corpus (7)

• Heavy quark dynamics and hadronization in ultra-relativistic heavy-ion collisions: collisional versus radiative energy loss
• Elliptic Flow in Pb+Pb Collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV at the LHC Using Boltzmann Transport Equation with Non-extensive Statistics
• Glauber-based evaluations of the odd moments of the initial eccentricity relative to the even order participant planes
• Correlations of Heavy Quarks Produced at Large Hadron Collider
• Production of Charm Quarks in a Parton Cascade Model for Relativistic Heavy Ion Collisions at $\sqrt{s_{\text{NN}}}$= 200 GeV
• Empirical determination of charm quark energy loss and its consequences for azimuthal anisotropy
• Azimuthal correlations of D-mesons in $p$+$p$ and $p$+Pb collisions at LHC energies