Asymmetric Di-jet Production in Polarized Hadronic Collisions
Abstract
Using the collinear QCD factorization approach, we study the single-transverse-spin dependent cross section Delta sigma(S_perp) for the hadronic production of two jets of momenta P_1=P+q/2 and P_2=-P+q/2. We consider the kinematic region where the transverse components of the momentum vectors satisfy P_perp >> q_perp >> Lambda_QCD. For the case of initial-state gluon radiation, we show that at the leading power in q_perp/P_perp and at the lowest non-trivial perturbative order, the dependence of Delta sigma(S_perp) on q_perp decouples from that on P_perp, so that the cross section can be factorized into a hard part that is a function only of the single scale P_perp, and into perturbatively generated transverse-momentum dependent (TMD) parton distributions with transverse momenta k_perp = O(q_perp).
Keywords
Cite
@article{arxiv.0704.1153,
title = {Asymmetric Di-jet Production in Polarized Hadronic Collisions},
author = {Jian-Wei Qiu and Werner Vogelsang and Feng Yuan},
journal= {arXiv preprint arXiv:0704.1153},
year = {2008}
}
Comments
11 pages, 2 figures