Angular Distributions of Drell - Yan Lepton Pairs at the Tevatron : Order α 2 s Corrections and Monte Carlo Studies
نویسندگان
چکیده
We investigate the angular distribution of the lepton pair in the process p¯ p → γ * + X → ℓ + ℓ − + X, where the virtual photon is produced at high transverse momentum. The angular distribution of the leptons is very sensitive to possible nonperturbative effects, such as a nontrivial vacuum structure of QCD, and offers a good chance to test such effects. We present complete O(α 2 s) calculations of the decay lepton distributions in the lepton pair rest frame. An order O(α s) Monte Carlo study of the lepton angular distributions, with acceptance cuts and energy resolution smearing applied to the leptons, is also presented.
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