Upsilon Measurements by the PHENIX Collaboration
Abstract
PHENIX has measured production in p+p, d+Au and Au+Au collisions at sNN=200 GeV. A baseline cross-section measurement has been made in p+p collisions. Preliminary studies of d+Au collisions found no suppression in the backward direction, but suppression was observed in the forward direction indicating the presence of cold nuclear matter effects. In Au+Au collisions preliminary studies of production at mid-rapidity found hints of suppression.
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