Total Cross Sections for Heavy Flavour Production at HERA

Abstract

We compute total cross sections for charm and bottom photoproduction at HERA energies, and discuss the relevant theoretical uncertainties. In particular we discuss the problems arising from the small-$x$ region, the uncertainties in the gluon parton density, and the uncertainties in the hadronic component of the cross section. Total electroproduction cross sections, calculated in the Weizsäcker-Williams approximation, are also given.

20 pages, Latex and style files tarred, gzipped and uuencoded; 10 postscript figures appended at the end (look for %%%%figures) as tarred, gzipped and uuencoded file

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• Improving the Weizsäcker-Williams Approximation in Electron-Proton Collisions
• Heavy Quark Correlations in Photon-Hadron Collisions
• Virtual Photon Strucutre Functions and the Parton Content of the Electron
• Resolved Virtual Photon Contributions to inelastic $e-p$ Scattering
• On the Determination of the Gluon Density of the Proton from Heavy-Flavour Production at HERA

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