Deep Inelastic Scattering Data and the Problem of Saturation in Small-x Physics

Abstract

We investigate the role of unitarization effects in virtual photon-proton (γ^*p) interactions at small x. The q\bar{q}-fluctuation of the initial photon is separated into a small distance and a large distance component and a model for the unitarization of each component is proposed. The Born approximation for the small size component is calculated using QCD perturbation theory. Reggeon diagram technique is used in order to obtain a self-consistent scheme for both total γ^*p cross section and diffractive production. The model gives a good description of HERA data in the small-x region, with a single Pomeron of intercept 1.2.

27 pages, 8 postscript figures

References in corpus (3)

• Parton Saturation at Small x and in Large Nuclei
• Measurement of the Proton Structure Function F_2 at Very Low Q^2 at HERA
• A unitary model for structure functions and diffractive production at small x

Cited by in corpus (21)

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• Impact parameter dependent S-matrix for dipole-proton scattering from diffractive meson electroproduction
• S-Matrix Unitarity, Impact Parameter Profiles, Gluon Saturation and High-Energy Scattering
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• Geometric scaling and QCD evolution
• Gluon shadowing in the Glauber-Gribov model at HERA
• Nuclear Structure Functions at Small x from Inelastic Shadowing and Diffraction
• Conformal invariant saturation
• Does F2 need a hard pomeron?
• J/psi suppression and the nuclear absorption decrease with increasing energy
• Ultra-high energy neutrino scattering
• Nuclear shadowing in Glauber-Gribov theory with Q2-evolution
• Geometric Scaling in a Symmetric Saturation Model
• The Logarithmic Slope in Diffractive DIS
• Gluon shadowing in the Glauber-Gribov model
• A geometrical estimation of saturation of partonic densities
• A unitarized model of inclusive and diffractive DIS with Q2-evolution
• $Q^2$-dependence of backward pion multiplicity in neutrino-nucleus interactions
• x_F-dependence of J/Psi suppression in pA collisions
• From Static Potentials to High-Energy Scattering
• Nuclear Shadowing and Diffraction