THE IMPACT OF NLO CORRECTIONS ON THE DETERMINATIONS OF THE ū, d̄ CONTENT OF NUCLEONS FROM DRELL-YAN PRODUCTION
نویسنده
چکیده
The interpretation of Drell-Yan production in terms of the antiquark densities depends on NLO corrections. Besides the NLO corrections to the familiar annihilation qq̄ → γ∗ → ll, there is a substantial contribution from the QCD Compton subprocesses gq → qγ∗ → qll and gq̄ → qγ∗ → qll. The beam and target dependence of the two classes of corrections is different. We discuss the impact of this difference on the determination of the d̄ − ū asymmetry in the proton from the comparison of the pp and pn Drell-Yan production.
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