Upsilon Suppression in PbPb Collisions at sqrt(s_NN) = 2.76 TeV [PDF]
Felix Nendzig, Georg WolschinWe suggest that the combined effect of screening, gluon-induced dissociation, collisional damping, and reduced feed-down explains most of the sequential suppression of Y(nS) states that has been observed in PbPb relative to pp collisions at sqrt(s_NN) = 2.76 TeV. The suppression is thus a clear, albeit indirect, indication for the presence of a qgp.View original: http://arxiv.org/abs/1207.6227
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