Nonperturbative Corrections to the Dilepton Cross Section

Abstract

We study the sensitivity of the dilepton production cross section to higher twist terms. A method for calculating the resummed cross section is introduced in moment space, where the leading higher twist terms can be easily parametrized and calculated. We find that a $1/Q$ power correction may significantly affect the cross section at fixed-target energies.

Comments: 11 pages, LaTeX, includes 2 uuencoded postcript figures