Heavy quarks at RHIC from parton transport theory

Abstract

There are several indications that an opaque partonic medium is created in energetic Au+Au collisions \sqrt{s} ~ 100 GeV/nucleon at the Relativistic Heavy Ion Collider (RHIC). At the extreme densities of ~ 10-100 times normal nuclear density reached even heavy-flavor hadrons are affected significantly. Heavy-quark observables are presented from the parton transport model MPC, focusing on the nuclear suppression pattern, azimuthal anisotropy ("elliptic flow"), and azimuthal correlations. Comparison with Au+Au data at top RHIC energy \sqrt{s} = 200 GeV indicates significant heavy quark rescattering, corresponding to roughly five times higher opacities than estimates based on leading-order perturbative QCD. We propose measurements of charm-anticharm, e.g., D-meson azimuthal correlations as a sensitive, independent probe to corroborate these findings.

Talk at Hot Quarks 2006, Int. Workshop, May 15-20, 2006, Villasimius, Sardinia, Italy. 6 pages, 8 EPS figures, EPJ stylefile

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• Heavy Flavor in Medium Momentum Evolution: Langevin vs Boltzmann
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• The hadronization time of heavy quark in nuclear matter
• Gluon contribution to open heavy-meson production in heavy-ion collisions
• Heavy-quark azimuthal momentum correlations as a sensitive probe of thermalization
• Transport Theory of Heavy Flavor in Relativistic Nuclear Collisions
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