Constraining the free parameter of the high parton density effects

Details Constraining the free parameter of the high parton density effects Constraining the free parameter of the high parton density effects

2000-06-29

arxiv.org/abs/hep-ph/0006341v1

Phys.Lett. B487 (2000) 110-117; Erratum-ibid. B491 (2000) 375-376

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 5 figures

Scientific paper

10.1016/S0370-2693(00)00813-3

The high density parton effects are strongly dependent of the spatial gluon distribution within the proton, with radius $R$, which cannot be derived from perturbative QCD. In this paper we assume that the unitarity corrections are present in the HERA kinematical region and constrain the value of $R$ using the data for the proton structure function and its slope. We obtain that the gluons are not distributed uniformly in the whole proton disc, but behave as concentrated in smaller regions.

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