Production of J/Psi at Large X(f) in 800 Gev/C P-Copper and P-Beryllium Collisions
Journal
Physical Review Letters
Journal Volume
72
Journal Issue
9
Pages
1318-1321
Date Issued
1994
Author(s)
Kowitt, Ms
Gidal, G.
Luk, Kb
Pripstein, D.
Isenhower, Ld
Sadler, Me
Schnathorst, R.
Schwint, R.
Lederman, Lm
Schub, Mh
Brown, Cn
Cooper, We
Glass, Hd
Gounder, Kn
Mishra, Cs
Boissevain, J.
Carey, Ta
Jansen, Dm
Jeppesen, Rg
Kapustinsky, Js
Lane, Dw
Leitch, Mj
Lillberg, Jw
Mcgaughey, Pl
Moss, Jm
Peng, Jc
Kaplan, Dm
Luebke, Wr
Martin, Vm
Preston, Rs
Sa, J.
Tanikella, V.
Childers, Rl
Darden, Cw
Wilson, Jr
Kiang, Gc
Teng, Pk
Chen, Yc
Abstract
The differential cross sections dσ/dxF for J/ψ produced inclusively in 800 GeV/c p-Cu and p-Be collisions have been measured in the kinematic range 0.30≤xF≤0.95 through the decay mode J/ψ→μ+μ-. They are compared with the predictions of the semilocal duality model for several sets of parton density functions. No evidence for a suggested intrinsic charm contribution to the cross section is observed. The ratio of the differential cross sections for Cu and Be targets confirms the suppression of J/ψ production in heavy nuclei at large xF. © 1994 The American Physical Society.
Type
journal article