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NNLO Corrections to the Polarized Drell-Yan Coefficient Function

V. Ravindran·J. Smith·W. L. van Neerven
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Abstract

We present the full next-to-next-to-leading order (NNLO) corrections to the coefficient function for the polarized cross section $d Δσ/d Q$ of the Drell-Yan process. We study the effect of these corrections on the process $p+p\to l^+l^-+`X'$ at an C.M. energy $\sqrt{S}=200 GeV$. All QCD partonic subprocesses have been included provided the lepton pair is created by a virtual photon, which is a valid approximation for a lepton pair invariant mass $Q<50 GeV$. For this reaction the dominant subprocess is given by $q+\bar q\to γ^*+`X'$ and its higher order corrections so that it provides us with an excellent tool to measure the polarized sea-quark densities.

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V. Ravindran, J. Smith, W. L. van Neerven. 2004-05-24. NNLO Corrections to the Polarized Drell-Yan Coefficient Function. https://doi.org/10.1016/j.nuclphysbps.2004.09.003

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