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arXiv · 1003.4533

Helicity Parton Distributions from Spin Asymmetries in W-Boson Production at RHIC

Daniel de Florian·Werner Vogelsang
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Abstract

We present a next-to-leading order QCD calculation of the cross section and longitudinal spin asymmetry in single-inclusive charged-lepton production, pp -> l X, at RHIC, where the lepton is produced in the decay of an electroweak gauge boson. Our calculation is presented in terms of a multi-purpose Monte-Carlo integration program that may be readily used to include experimental spin asymmetry data in a global analysis of helicity parton densities. We perform a toy global analysis, studying the impact of anticipated RHIC data on our knowledge about the polarized anti-quark distributions.

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Daniel de Florian, Werner Vogelsang. 2010-03-23. Helicity Parton Distributions from Spin Asymmetries in W-Boson Production at RHIC. https://doi.org/10.1103/physrevd.81.094020

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