Upsilon production in pp-bar collisions at sqrt s=1.8 TeV.
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We report on measurements of the (1S), (2S), and (3S) differential, (d2 dPtdy)y=0, and integrated cross sections in pp collisions at s=1.8 TeV using a sample of 16.6 0.6 pb-1 collected by the Collider Detector at Fermilab. The three resonances were reconstructed through the decay. Comparison is made to a leading order QCD prediction. 1995 The American Physical Society.