B_c Production at RHIC as a Signal for Deconfinement
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The B_C meson is the bound state of b-cbar whose recent detection is the first step toward completion of the spectroscopy of heavy quark mesonic states. The b-c states have properties that conveniently fill the gap between the J/Psi and Upsilon states. Thus it is probable that at RHIC the B_c mesons will serve as a probe of deconfined matter. We find that significant differences arise for B_c formation in deconfined and confined matter. Our initial calculations suggest that: (a) The rates of normal hadronic production mechanisms at RHIC energies are not sufficient to produce a detectable number of B_c mesons, (b) If a region of deconfined quarks and gluons is formed, the production (and survival) rate can be enhanced by several orders of magnitude, and (c) The observation of B_c mesons at RHIC would signal a source of deconfined charmed quarks, and the rate of B_c production will be a measure of the initial density and temperature of that source.
8 pages, 3 figures, Summary of presentations at Quark Matter '99, Heavy Ion Theory '99, and XXIX Cracow School of Theoretical Physics, Zakopane, June 1999
8 pages, 3 figures, Summary of presentations at Quark Matter '99, Heavy Ion Theory '99, and XXIX Cracow School of Theoretical Physics, Zakopane, June 1999