Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2006-03-02
Physics
Nuclear Physics
Nuclear Theory
4 pages,3 figures;extended to include bottom quark momentum degradation
Scientific paper
Heavy quark drag coefficients in the quark-gluon plasma are evaluated in the perturbative QCD. It is found that for charm quarks the contribution from three-body elastic scattering is comparable to those from two-body elastic and radiative scatterings while for bottom quarks it becomes dominant. Using a schematic expanding fireball model, effects of both two-body and three-body scatterings on the transverse momentum spectra of heavy quarks produced in Au+Au collisions at center of mass energy $\sqrt{s_{NN}}=200$ GeV are studied. Results on electrons from resulting heavy meson decays are compared with available experimental data.
Ko Che Ming
Liu Wende
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