Bottomonium and Drell-Yan production in p-A collisions at 450 GeV

摘要

The NA50 Collaboration has measured heavy-quarkonium production in p-A collisions at 450 GeV incident energy (root s- = 29.1 GeV). We report here results on the production of the r states and of high-mass Drell-Yan muon pairs (m(mu mu) > 6 GeV/c(2)). The cross-section at midrapidity and the A-dependence of the measured yields are determined and compared with the results of other fixed-target experiments and with the available theoretical estimates. Finally, we also address some issues concerning the transverse momentum distributions of the measured dimuons. (c) 2006 Elsevier B.V. All rights reserved.