Does the Charm Flow at RHIC?

Details Does the Charm Flow at RHIC? Does the Charm Flow at RHIC?

2002-12-16

arxiv.org/abs/nucl-th/0212068v1

Phys.Lett.B557:26-32,2003

Physics

Nuclear Physics

Nuclear Theory

10 pages, 3 figures, submitted to Phys. Lett. B

Scientific paper

10.1016/S0370-2693(03)00175-8

Recent PHENIX Au+Au -> e- + X data from open charm decay are shown to be consistent with two extreme opposite dynamical scenarios of ultra-relativistic nuclear reactions. Perturbative QCD without final state interactions was previously shown to be consistent with the data. However, we show that the data are also consistent with zero mean free path hydrodynamics characterized by a common transverse flow velocity field. The surprising coincidence of both D and B hydrodynamic flow spectra with pQCD up to p_T ~ 3 and 5 GeV, respectively, suggests that heavy quarks may be produced essentially at rest in the rapidly expanding gluon plasma. Possible implications and further tests of collective heavy quark dynamics are discussed.

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