Hard diffraction at HERA in the dipole model of BFKL dynamics

Abstract

Using the QCD dipole picture of the hard BFKL pomeron, we derive the general expressions of the elastic and inelastic components of the proton diffractive structure functions. We obtain a good 7 parameter fit (including a secondary reggeon contribution) to data taken at HERA by the H1 and ZEUS collaborations. The main characteristic features of the model in reproducing the data are discussed, namely the effective pomeron intercept, the scaling violations and the beta dependence. A difference obtained in the separate H1 and ZEUS fits leads us to analyse directly the differences between both measurements. Predictions on R, the ratio of longitudinal to transverse photon cross sections are performed and lead to very large values at high beta and large virtuality Q which may lead to a discrimination between models.

uuencoded (latex file + 11 eps.figures), 27 pages

References in corpus (6)

• Inclusive Measurement of Diffractive Deep-inelastic ep Scattering
• Conformal Invariance and the exact solution of BFKL equations
• Onium-Onium scattering at fixed impact parameter: exact equivalence between the color dipole model and the BFKL Pomeron
• Towards an unified description of total and diffractive structure functions at HERA in the QCD dipole picture
• High-mass diffraction in the QCD dipole picture
• High energy factorization predictions for the charm structure function F2^c at HERA

Cited by in corpus (22)

• Diffractive Dissociation Including Multiple Pomeron Exchanges in High Parton Density QCD
• A unified description of diffractive deep inelastic scattering with saturation
• Geometric scaling in diffractive deep inelastic scattering
• The QCD description of diffractive processes
• Investigating saturation effects in ultraperipheral collisions at the LHC with the color dipole model
• Diffractive photon dissociation in the saturation regime from the Good and Walker picture
• ${\gamma }^{\ast }{\gamma }^{\ast }$ total cross-section in the dipole picture of BFKL dynamics
• QCD dipole model and k_T factorization
• QCD analysis of the diffractive structure function F_2^{D(3)}
• Advances in diffraction of subnuclear waves
• Virtual photon impact factors with exact gluon kinematic
• A global analysis of inclusive diffractive cross sections at HERA
• QCD rescattering mechanism for diffractive deep inelastic scattering
• Geometric scaling in exclusive processes
• A new determination of the Pomeron intercept in hard processes
• Charm production in diffractive deep inelastic scattering
• Gamma(*)Gamma(*) reaction at high energies
• Measurement of the diffractive structure function $F_2^{D(3)}$
• On the QCD dipole content of hard photon and gluon probes
• `Effective' Pomeron model at large $\mathbf{b}$
• Hard diffraction and QCD multi-Pomeron vertices
• Review of diffraction at HERA and Tevatron