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      Radiative and Collisional Energy Loss of Heavy Quarks in Deconfined Matter

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          Abstract

          We extend our recently advanced model on collisional energy loss of heavy quarks in a quark gluon plasma (QGP) by including radiative energy loss. We discuss the approach and present calculations for PbPb collisions at √s=2.76TeV. The transverse momentum spectra, RAA, and the elliptic flow v2 of heavy quarks have been obtained using the model of Kolb and Heinz for the hydrodynamical expansion of the plasma.

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          Diffusion of charmed quarks in the quark-gluon plasma

          Benjamin Svetitsky (1988)
          Article 0 comments Cited 129 times – based on 0 reviews     Review now
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            Hadronization by color bremsstrahlung

            J. F. Gunion, G Bertsch (1982)
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              How Much do Heavy Quarks Thermalize in a Heavy Ion Collision?

              Derek Teaney, Guy D. Moore (2004)
              We investigate the thermalization of charm quarks in high energy heavy ion collisions. To this end, we calculate the diffusion coefficient in the perturbative Quark Gluon Plasma and relate it to collisional energy loss and momentum broadening. We then use these transport properties to formulate a Langevin model for the evolution of the heavy quark spectrum in the hot medium. The model is strictly valid in the non-relativistic limit and for all velocities γv<\alphas−1/2 to leading logarithm in T/mD. The corresponding Fokker-Planck equation can be solved analytically for a Bjorken expansion and the solution gives a simple estimate for the medium modifications of the heavy quark spectrum as a function of the diffusion coefficient. Finally we solve the Langevin equations numerically in a hydrodynamic simulation of the heavy ion reaction. The results of this simulation are the medium modifications of the charm spectrum RAA and the expected elliptic flow v2(pT) as a function of the diffusion coefficient.
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                Author and article information

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                Publication date Created: 19 January 2012
                Article
                ArXiV ID: 1201.4192
                SO-VID: f21ed9dc-2070-451e-9aa8-6ec1b29a7cef
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                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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                Comments invited talk at the Strange Quark Matter conference in Krakow 18-24. September 2011
                Categories nucl-th

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