Helicity Parton Distributions from Spin Asymmetries in W-Boson Production at RHIC
High Energy Physics - Phenomenology
2011-03-09 v3 High Energy Physics - Experiment
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.
Keywords
Cite
@article{arxiv.1003.4533,
title = {Helicity Parton Distributions from Spin Asymmetries in W-Boson Production at RHIC},
author = {Daniel de Florian and Werner Vogelsang},
journal= {arXiv preprint arXiv:1003.4533},
year = {2011}
}
Comments
22 pages, 13 figures included. Typos in Figs 2, 6, 8 and scales corrected