Heavy-quark state production in A-A collisions at $\sqrt{s}$=200 GeV

Abstract

We estimate differential rapidity cross sections for $J/\Psi$ and ${\rm Y}(1S)$ production via Cu-Cu and Au-Au collisions at RHIC, and the relative probabilities of ${\Psi }^{\prime }(2S)$ to $J/\Psi$ production via p-p collisions using our recent theory of mixed heavy quark hybrids, in which the ${\Psi }^{\prime }(2S)$ mesons have approximately equal normal $q\bar{q}$ and hybrid $q\bar{q}g$ components. We also estimate the relative probabilities of ${\Psi }^{\prime }(2S)$ to $J/\Psi$ production via Cu-Cu and Au-Au collisions, which will be measured in future RHIC experiments. We also review production ratios of ${\rm Y}(2S)$ and ${\rm Y}(3S)$ to ${\rm Y}(1S)$ in comparison to recent experimental results.This is an extension of our recent work on p-p collisions for possible tests of the production of Quark-Gluon Plasma via A-A collisions at BNL-RHIC.

Comments: 10 pages, 10 figures