Diffractive photon dissociation in the saturation regime from the Good and Walker picture

Abstract

Combining the QCD dipole model with the Good and Walker picture, we formulate diffractive dissociation of a photon of virtuality Q^2 off a hadronic target, in the kinematical regime in which Q is close to the saturation scale and much smaller than the invariant mass of the diffracted system. We show how the obtained formula compares to the HERA data and discuss what can be learnt from such a phenomenology. In particular, we argue that diffractive observables in these kinematics provide useful pieces of information on the saturation regime of QCD.

17 pages, 7 figures, revtex

References in corpus (33)

• Computing Quark and Gluon Distribution Functions for Very Large Nuclei
• Operator expansion for high-energy scattering
• Gluon Distribution Functions for Very Large Nuclei at Small Transverse Momentum
• Small-x F_2 Structure Function of a Nucleus Including Multiple Pomeron Exchanges
• Nonlinear Gluon Evolution in the Color Glass Condensate: I
• Saturation Effects in Deep Inelastic Scattering at low $Q^2$ and its Implications on Diffraction
• Green's Functions in the Color Field of a Large Nucleus
• Nonlinear Gluon Evolution in the Color Glass Condensate: II
• Saturation in Diffractive Deep Inelastic Scattering
• An Impact Parameter Dipole Saturation Model
• Single and Double BFKL Pomeron Exchange and a Dipole Picture of High Energy Hard Processes
• Gluon Production from Non-Abelian Weizsäcker-Williams Fields in Nucleus-Nucleus Collisions
• Gluon Production at High Transverse Momentum in the McLerran-Venugopalan Model of Nuclear Structure Functions
• Solution to the evolution equation for high parton density QCD
• Saturation and Universality in QCD at small x
• The triple-pomeron regime and the structure function of the pomeron in the diffractive deep inelastic scattering at very small x
• Eikonal Evolution and Gluon Radiation
• Impact parameter dependent S-matrix for dipole-proton scattering from diffractive meson electroproduction
• A Gaussian effective theory for gluon saturation
• S-Matrix Unitarity, Impact Parameter Profiles, Gluon Saturation and High-Energy Scattering
• An Analysis of Diffraction in Deep-Inelastic Scattering
• Diffractive Gluon Production in Proton-Nucleus Collisions and in DIS
• Diffraction in Deep Inelastic Scattering
• Hard Diffraction in the QCD Dipole Picture
• Towards an unified description of total and diffractive structure functions at HERA in the QCD dipole picture
• How to measure the intercept of the BFKL pomeron at HERA
• Hard diffraction at HERA in the dipole model of BFKL dynamics
• Hard Diffraction From Quasi-Elastic Dipole Scattering
• Measurement of the Q2 and energy dependence of diffractive interactions at HERA
• Geometric Scaling in a Symmetric Saturation Model
• The Hard and Soft Contributions in Diffraction: A Closer Look
• The Logarithmic Slope in Diffractive DIS
• Diffraction at small M^2/Q^2 in the QCD dipole picture

Cited by in corpus (32)

• Small-x physics beyond the Kovchegov equation
• Nuclear enhancement and suppression of diffractive structure functions at high energies
• Diffusive scaling and the high-energy limit of deep inelastic scattering in QCD at large N_c
• A unified description of diffractive deep inelastic scattering with saturation
• Geometric scaling in diffractive deep inelastic scattering
• A QCD dipole formalism for forward-gluon production
• Saturation in diffractive deep inelastic eA scattering
• Diffractive deep inelastic scattering at NLO in the dipole picture: the $q\bar{q}g$ contribution
• Testing saturation with diffractive jet production in deep inelastic scattering
• Heavy flavour production in DGLAP improved saturation model
• Selected topics in diffraction with protons and nuclei: past, present, and future
• Nuclear shadowing in Glauber-Gribov theory with Q2-evolution
• Evidence of strong higher twist effects in diffractive DIS at HERA at moderate Q2
• Exclusive photoproduction of vector meson at next-to-leading order from Color Glass Condensate
• Rapidity gap distribution in diffractive deep-inelastic scattering and parton genealogy
• Diffractive dissociation including pomeron loops in zero transverse dimensions
• Coherent and incoherent diffractive hadron production in pA collisions and gluon saturation
• Spectrum of diffractively produced gluons in onium-nucleus collisions
• Gluon multiplicity in coherent diffraction of onium on a heavy nucleus
• Gluon production and diffraction in the dipole picture
• Charm production in diffractive deep inelastic scattering
• DGLAP evolution for DIS diffraction production of high masses
• CGC/saturation approach: an impact-parameter dependent model for diffraction production in DIS
• Effective Field Theory Factorization for Diffraction
• Determination of the initial condition for the Balitsky-Kovchegov equation with transformers
• Modified homotopy approach for diffractive production in the saturation region
• Statistical properties of partonic configurations and diffractive dissociation in high-energy electron-nucleus scattering
• Diffractive hadron production in DIS off heavy nuclei and gluon saturation
• Diffractive structure functions in nuclei
• Diffraction and Vector Mesons Working Group Summary
• Diffractive structure function in the dipole picture
• Diffractive deep inelastic scattering in the dipole picture: the $q\bar{q}g$ contribution in exact kinematics