Open Charm as a Probe of Pre-Equilibrium Dynamics in Nuclear Collisions?

Details Open Charm as a Probe of Pre-Equilibrium Dynamics in Nuclear Collisions? Open Charm as a Probe of Pre-Equilibrium Dynamics in Nuclear Collisions?

1994-09-09

arxiv.org/abs/nucl-th/9409007v5

Phys.Rev.C51:2177-2187,1995; Erratum-ibid.C52:440,1995

Physics

Nuclear Physics

Nuclear Theory

25 pages, revtex, 10 figures, a typing mistake in equation(16) corrected, a reference changed

Scientific paper

10.1103/PhysRevC.51.2177 10.1103

The pre-equilibrium contribution to open charm production in nuclear collisions at $\sqrt{s}=200$ AGeV is calculated using three different models for the correlations between momentum and space-time coordinates. Ideal (Bjorken) correlation between the rapidity $y$ and space-time rapidity $\eta$ of mini-jet gluons suppresses greatly the pre-equilibrium yield and even allowing for the minimal uncertainty correlations leads, in contrast to previous estimates, only to a small pre-equilibrium charm yield as compared to initial yield due to gluon fusion. The ``intrinsic'' charm process is negligible in the mid-rapidity domain.

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