Simultaneous QCD analysis of diffractive and inclusive DIS data

Details Simultaneous QCD analysis of diffractive and inclusive DIS data Simultaneous QCD analysis of diffractive and inclusive DIS data

2004-06-21

arxiv.org/abs/hep-ph/0406225v2

Phys.Rev. D70 (2004) 091502

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 3 figures. Version published as a Rapid Communication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.70.091502

We perform a NLO QCD analysis of deep-inelastic scattering data, in which we account for absorptive corrections. These corrections are determined from a simultaneous analysis of diffractive deep-inelastic data. The absorptive effects are found to enhance the size of the gluon distribution at small x, such that a negative input gluon distribution at Q^2 = 1 GeV^2 is no longer required. We discuss the problem that the gluon distribution is valence-like at low scales, whereas the sea quark distribution grows with decreasing x. Our study hints at the possible importance of power corrections for Q^2 \simeq 1--2 GeV^2.

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