Constraints on the Gluon Density from Lepton Pair Production

2000/01/14 by E. L. Berger, Berger, E. L., M. Klasen +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0001127

5 pages, 7 figures, to appear in the Proceedings of the Fermilab Physics at Run II Workshop on ``QCD and Weak Boson Physics'

arxiv created 2000/01/14 · arxiv updated 2009/11/30

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.

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