The geometric clustering of partons in the transverse plane of nuclear collisions leads for increasing A or roots to percolation. In the resulting condensate, the partons are deconfined but not yet in thermal equilibrium. We discuss quarkonium dissociation in this precursor of the quark-gluon plasma, with an onset of dissociation when the saturation scale of the parton condensate reaches that of the given quarkonium state. (C) 2002 Elsevier Science B.V. All rights reserved. References: 44
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