Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-06-17
Nucl.Phys.Proc.Suppl.82:179-184,2000
Physics
High Energy Physics
High Energy Physics - Phenomenology
Talk given by M. Klasen at the International Conference on the Structure and Interactions of the Photon, PHOTON 99, Freiburg i
Scientific paper
10.1016/S0920-5632(00)00151-1
The hadroproduction of lepton pairs with mass $Q$ and transverse momentum $Q_T$ can be 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 leads to sensitivity to the gluon density in kinematical regimes that are accessible both at collider and fixed target experiments while eliminating the theoretical and experimental uncertainties present in prompt photon production.
Berger Edmond L.
Klasen Michael
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