Constraints on the Gluon Density from Lepton Pair Production
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
The hadroproduction of lepton pairs with mass Q and finite transverse momentum Q_T is described in perturbative QCD by the same partonic subprocesses as prompt photon production. We demonstrate that, like prompt photon production, lepton pair production is dominated by quark-gluon scattering in the region Q_T>Q/2. This feature leads to sensitivity to the gluon density in kinematical regimes accessible in collider and fixed target experiments, and it provides a new independent method for constraining the gluon density.
Cite
@article{arxiv.hep-ph/0001127,
title = {Constraints on the Gluon Density from Lepton Pair Production},
author = {E. L. Berger and M. Klasen},
journal= {arXiv preprint arXiv:hep-ph/0001127},
year = {2007}
}
Comments
5 pages, 7 figures, to appear in the Proceedings of the Fermilab Physics at Run II Workshop on ``QCD and Weak Boson Physics'