On theQ 2-extrapolations of AF-corrected Drell-Yan processes |
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| Authors: | B. Humpert |
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| Affiliation: | 1. Physics Department, University of Wisconsin, 53706, Madison, WI, USA
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| Abstract: | TheQ 2-dependence of the integrated Drell-Yan cross sections with asymptotic freedom (AF) corrections is investigated forQ 2≦ 107 GeV2. Existing AF-parametrizations lead to widely differing predictions. Lowest order QCD indicates a strong dependence on thex-behaviour of the input momentum distributions (atQ 2=Q 0 2 ) which for sea quarks and gluons are guesses. Consequently, AF-corrected Drell-Yan extrapolations toW-energies and beyond involve considerable uncertainties. |
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