Unitarity effects in hard diffraction at HERA

Abstract

We study how factorization breaking changes when going from diffractive deep inelastic scattering to diffractive photoproduction of dijets. These processes offer a sensitive probe of the interplay of soft and hard mechanisms in QCD. We demonstrate that unitarity effects are already important in the gluon distribution for x ~ 10^{-4}, for quite a wide range of Q^2.

12 pages, 7 figures

References in corpus (24)

• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Uncertainties of predictions from parton distributions. I: experimental errors
• MRST2001: partons and alpha_S from precise deep inelastic scattering and Tevatron jet data
• Proof of Factorization for Diffractive Hard Scattering
• Inclusive Measurement of Diffractive Deep-inelastic ep Scattering
• First Measurement of the Deep--Inelastic Structure of Proton Diffraction
• Soft diffraction and the elastic slope at Tevatron and LHC energies: a multi-Pomeron approach
• Elastic Electroproduction of rho Mesons at HERA
• Probabilities of rapidity gaps in high energy interactions
• Measurement of the diffractive structure function in deep inelastic scattering at HERA
• D* Production in Deep Inelastic Scattering at HERA
• Inclusive $D^0$ and $D^{\ast }\pm$ Production in Deep Inelastic $ep$ Collisions at HERA
• Elastic and Proton-Dissociative rho0 Photoproduction at HERA
• The survival probability of large rapidity gaps in a three channel model
• Diffractive Jet Production in Deep-Inelastic e^+p Collisions at HERA
• Diffractive dijet production at HERA
• Measurement of inclusive D*+- and associated dijet cross sections in photoproduction at HERA
• Measurement of Inclusive Jet Cross-Sections in Deep-Inelastic ep Scattering at HERA
• The non-forward BFKL amplitude and rapidity gap physics
• Deep Inelastic Scattering Data and the Problem of Saturation in Small-x Physics
• A Two Channel Calculation of Screening Corrections
• Diffractive Dijet Cross Sections in Photoproduction at HERA
• Factorization breaking in diffractive dijet production
• Coherent Photoproduction from Nuclei

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• The Hadronic Final State at HERA
• Tests of QCD Factorisation in the Diffractive Production of Dijets in Deep-Inelastic Scattering and Photoproduction at HERA
• Diffractive Dijet Production and Wigner Distributions from the Color Glass Condensate
• Impact factor for high-energy two and three jets diffractive production
• Diffractive photoproduction of dijets in ep collisions at HERA
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• Induced gravity with a non-minimally coupled scalar field on the brane
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• Information from leading neutrons at HERA
• Diffractive dijet photoproduction in ultraperipheral collisions at the LHC in next-to-leading order QCD
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• Factorization Breaking in Diffractive Dijet Photoproduction
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• Diffractive Photoproduction of D*+/-(2010) at HERA
• Nuclear shadowing in Glauber-Gribov theory with Q2-evolution
• A review of forward proton tagging at 420m at the LHC, and relevant results from the Tevatron and HERA
• Factorization scheme and scale dependence in diffractive dijet production at low Q^2
• High Energy Photoproduction
• Evidence for Factorization Breaking in Diffractive Low-Q^2 Dijet Production
• A fresh look at factorization breaking in diffractive photoproduction of dijets at HERA at next-to-leading order QCD
• Suppression factors in diffractive photoproduction of dijets
• How large is the diffractive contribution to inclusive dijet photoproduction in UPCs at the LHC?
• Diffractive dijet photoproduction at the EIC
• Diffractive Higgs boson photoproduction in Ultraperipheral Collisions at LHC
• Gluon shadowing in the Glauber-Gribov model
• Factorisation breaking in diffractive dijet photoproduction at HERA?
• High-energy photon collisions at the LHC - dream or reality?
• Inclusive and exclusive diffraction: overview of the experimental presentations at Diffraction2004
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• Energy dependence of nuclear effects in hadron-nucleus collisions