The pomeron structure in DIS and gluon recombination effects |
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Authors: | G Ingelman K Prytz |
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Institution: | 1. Department of Radiation Sciences, Uppsala University, Box 535, S-751 21, Uppsala, Sweden 2. Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, W-2000, Hamburg 52, Germany
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Abstract: | A formalism for diffractive deep inelastic scattering is presented based on the concept of a pomeron structure function. Assuming the pomeron to be essentially a gluonic object with the small size indicated by its small interaction cross-sections, we show that the QCD evolution of its structure function exhibits large screening corrections due to gluon recombinations at small-χ. With a gluon-to-quark conversion appropriate at small-χ, diffractiveep cross-sections are obtained giving large enough statistics at HERA to distinguish between QCD evolution governed by the conventional Altarelli-Parisi equations and by the non-linear Gribov-Levin-Ryskin equation. |
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