On possible implications of gluon number fluctuations in DIS data

Abstract

We study the effect of gluon number fluctuations (Pomeron loops) on deep inelastic scattering (DIS) in the fixed coupling case. We find that the description of the DIS data is improved once gluon number fluctuations are included. Also the values of the parameters, like the saturation exponent and the diffussion coefficient, turn out reasonable and agree with values obtained from numerical simulations of toy models which take into account fluctuations. This outcome seems to indicate the evidence of geometric scaling violations, and a possible implication of gluon number fluctuations, in the DIS data. However, we cannot exclude the possibility that the scaling violations may also come from the diffusion part of the solution to the BK-equation, instead of gluon number fluctuations.

9 pages, 2 figures; references added, minor changes, matches published version

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Cited by in corpus (6)

• High energy scattering in the saturation regime including running coupling and rare fluctuation effects
• Systematic Analysis of Scaling Properties in Deep Inelastic Scattering
• DIS and the effects of fluctuations: a momentum space analysis
• Connections between high energy QCD and statistical physics
• High energy QCD beyond the mean field approximation
• On the behaviour of R(pA) at high energy