Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
1999-09-14
Phys.Rev.Lett.84:3256-3260,2000
Physics
Nuclear Physics
Nuclear Experiment
5 pages, 4 figures, accepted for publication by PRL
Scientific paper
10.1103/PhysRevLett.84.3256
Measurements of the suppression of the yield per nucleon of J/Psi and Psi' production for 800 GeV/c protons incident on heavy relative to light nuclear targets have been made with very broad coverage in xF and pT. The observed suppression is smallest at xF values of 0.25 and below and increases at larger values of xF. It is also strongest at small pT. Substantial differences between the Psi' and J/Psi are observed for the first time in p-A collisions. The suppression for the Psi' is stronger than that for the J/Psi for xF near zero, but becomes comparable to that for the J/Psi for xF > 0.6.
Beddo M. E.
Brown Charles N.
Carey T. A.
Chang Tsung-Hui
Cooper W. E.
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