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arXiv · hep-ph/9307340

Photoproduction of large-mass lepton pairs at HERA as a probe of the small $x$ structure of the proton

A. C. Bawa·K. Charchula·W. J. Stirling
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Abstract

The photoproduction of Drell-Yan lepton pairs at HERA is studied. We show that in the backward rapidity region the cross section is strongly sensitive to the small-$x$ behaviour of the quark distributions in the proton, and that with sufficient luminosity it should be possible to distinguish singular $xq \sim x^{-1/2}$ behaviour from standard Regge $xq \sim x^0$ behaviour. The effect on the event rate of experimental acceptance cuts is studied with the help of a Monte Carlo event generator.

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A. C. Bawa, K. Charchula, W. J. Stirling. 1993-07-27. Photoproduction of large-mass lepton pairs at HERA as a probe of the small $x$ structure of the proton. https://doi.org/10.1016/0370-2693(93)90020-i

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