ϒ Suppression in PbPb Collisions at sNN=2.76 TeV

We suggest that the combined effect of screening, gluon-induced dissociation, collisional damping, and reduced feed-down explains most of the sequential suppression of ϒ(nS) states that has been observed in PbPb relative to pp collisions at sNN=2.76 TeV. The suppression is thus a clear, albeit indirect, indication for the presence of a qgp.