Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2001-09-12
Physics
High Energy Physics
High Energy Physics - Experiment
Scientific paper
10.1063/1.1469994
We report an analysis of the nuclear dependence of the yield of Drell-Yan (DY) dimuons from the 800 GeV/c proton bombardment of $^2H$, 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 $x_2\ll x_1$, 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 $x_1$. With the assumption of constant energy loss per unit path length, we find $-dE/dz = 2.32 \pm 0.52\pm 0.5$ GeV/fm. This is the first observation of a nonzero energy loss of partons traveling in nuclear environment.
Garvey Gerald T.
Johnson Mikkel B.
Kopeliovich Peng B. J.-C. Z.
Leitch Michael J.
McGaughey P. L.
No associations
LandOfFree
Energy loss of fast quarks in nuclei does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Energy loss of fast quarks in nuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy loss of fast quarks in nuclei will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-611236