Next-to-leading order QCD corrections to A_TT for prompt photon production
High Energy Physics - Phenomenology
2009-11-10 v1
Abstract
We present a next-to-leading order QCD calculation of the cross section for isolated large-p_T prompt photon production in collisions of transversely polarized protons. We devise a simple method of dealing with the phase space integrals in dimensional regularization in the presence of the cos(2 phi) azimuthal-angular dependence occurring for transverse polarization. Our results allow to calculate the double-spin asymmetry A_TT for this process at next-to-leading order accuracy, which may be used at BNL-RHIC to measure the transversity parton distributions of the proton.
Keywords
Cite
@article{arxiv.hep-ph/0303226,
title = {Next-to-leading order QCD corrections to A_TT for prompt photon production},
author = {A. Mukherjee and M. Stratmann and W. Vogelsang},
journal= {arXiv preprint arXiv:hep-ph/0303226},
year = {2009}
}
Comments
19 pages, LaTeX, 2 figures as eps files