D. M. Alde

Energy loss of fast quarks in nuclei

We report an analysis of the nuclear dependence of the yield of Drell-Yan (DY) dimuons from the 800 GeV/c proton bombardment of

Nuclear dependence of heavy quark production

^2H

Nuclear dependence of dimuon production at 800 GeV.

, C, Ca, Fe, and W targets. A light-cone formulation of the DY process is employed in the rest frame of the nucleus. In this frame, for

A dependence of J/ psi and psi ' production at 800 GeV/c.

x_2\ll x_1

Nuclear dependence of the production of Upsilon resonances at 800-GeV

, DY production appears as bremsstrahlung of a virtual photon followed by decay into dileptons. We treat the two sources of nuclear suppression, energy loss and shadowing, in a consistent formulation. Shadowing, involving no free parameters, is calculated within the light-cone dipole formalism. Initial-state energy loss, the only unknown in the problem, is determined from a fit to the nuclear-dependence ratio versus

Limit on the d/u asymmetry of the nucleon sea from Drell-Yan production

x_1

Cross sections for the production of high-mass muon pairs from 800 GeV proton bombardment of 2H.

. With the assumption of constant energy loss per unit path length, we find

Erratum: Cross sections for the production of high-mass muon pairs from 800 GeV proton bombardment of2H[Phys. Rev. D50, 3038 (1994)]

-dE/dz = 2.32 \pm 0.52\pm 0.5

A dependence of J/ and production at 800 GeV/c

GeV/fm. This is the first observation of a nonzero energy loss of partons traveling in nuclear environment.

Adependence ofJ/ψ and ψ’ production at 800 GeV/c

The nuclear dependence of charm and beauty production is reviewed. Particular emphasis is placed on the new high‐precision data from Fermilab experiment E772. These data are qualitatively compared with current theoretical models of nuclear dependent effects. The relevance of these results to J/ψ suppression studies in relativistic heavy ion collisions is also discussed.