Single Transverse-Spin Asymmetries in Hadronic Pion Production
High Energy Physics - Phenomenology
2014-11-17 v1
Abstract
We analyze single transverse-spin asymmetries for hadronic pion production at large transverse momenta using QCD factorization. In the large region, leading contributions to the asymmetries are naturally produced by twist-3 parton correlation functions that couple quark fields and gluon field strengths. With a simple model for these matrix elements, leading-order asymmetries calculated from QCD are consistent with data on pion production from Fermilab, and can be used to predict single-spin asymmetries at RHIC. We argue that our perturbative calculation for the asymmetries is relevant to pion transverse momenta as low as a few GeV.
Keywords
Cite
@article{arxiv.hep-ph/9806356,
title = {Single Transverse-Spin Asymmetries in Hadronic Pion Production},
author = {Jianwei Qiu and George Sterman},
journal= {arXiv preprint arXiv:hep-ph/9806356},
year = {2014}
}
Comments
Revtex, 52 pages, 29 figures, 2 tables