Review of High Energy Diffraction in Real and Virtual Photon Proton scattering at HERA

Abstract

The electron-proton collider HERA at DESY opened the door for the study of diffraction in real and virtual photon-proton scattering at center-of-mass energies W up to 250 GeV and for large negative mass squared -Q^2 of the virtual photon up to Q^2 = 1600 GeV^2. At W = 220 GeV and Q^2 = 4 GeV^2, diffraction accounts for about 15% of the total virtual photon proton cross section decreasing to ~5% at Q^2 = 200 GeV^2. An overview of the results obtained by the experiments H1 and ZEUS on the production of neutral vectormesons and on inclusive diffraction up to the year 2008 is presented.

124 pages, 114 figures

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• Diffractive Dijet Production and Wigner Distributions from the Color Glass Condensate
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• Introduction to the physics of the total cross-section at LHC: A Review of Data and Models
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• A comparative study of the neutrino-nucleon cross section at ultra high energies
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• Investigating the effects of the QCD dynamics in the neutrino absorption by the Earth's interior at ultrahigh energies
• Geometric scaling in ultrahigh energy neutrinos and nonlinear perturbative QCD