Higher order QCD corrections to the photoproduction of a direct photon at HERA
P Aurenche, P Chiappetta, M Fontannaz… - Zeitschrift für Physik C …, 1992 - Springer
P Aurenche, P Chiappetta, M Fontannaz, JP Guillet, E Pilon
Zeitschrift für Physik C Particles and Fields, 1992•SpringerThe contribution of resolved photons to the photoproduction cross section of direct photons
is reexamined. Higher order, O (α 2 α s), QCD corrections to this contribution are calculated
and turn out to be important at HERA energies. The observation of direct photons in the
medium-p⊥ range (p⊥∼ 5 GeV/c) should provide the opportunity to measure the gluon
content of the photon.
is reexamined. Higher order, O (α 2 α s), QCD corrections to this contribution are calculated
and turn out to be important at HERA energies. The observation of direct photons in the
medium-p⊥ range (p⊥∼ 5 GeV/c) should provide the opportunity to measure the gluon
content of the photon.
Abstract
The contribution of resolved photons to the photoproduction cross section of direct photons is reexamined. Higher order,O(α 2 α s), QCD corrections to this contribution are calculated and turn out to be important at HERA energies. The observation of direct photons in the medium-p ⊥ range (p ⊥∼5 GeV/c) should provide the opportunity to measure the gluon content of the photon.
Springer
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