Effect of three-body elastic scattering on heavy quark momentum degradation in the quark-gluon plasma
W. Liu, C. M. Ko
Abstract
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 sNN=200 GeV are studied. Results on electrons from resulting heavy meson decays are compared with available experimental data.
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