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Effect of absorptive corrections on inclusive parton distributions

G. Watt, A. D. Martin, M. G. Ryskin

hep-pharXiv:hep-ph/0508093

Abstract

We study the effect of absorptive corrections due to parton recombination on the parton distributions of the proton. A more precise version of the GLRMQ equations, which account for non-linear corrections to DGLAP evolution, is derived. An analysis of HERA F2 data shows that the small-x gluon distribution is enhanced at low scales when the absorptive effects are included, such that a negative gluon distribution at 1 GeV is no longer required.

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