Skewed Parton Distributions and F_2^D at beta -> 1

Abstract

We show that the diffractive structure function is perturbatively calculable in the domain where the diffractive mass is small but still outside the resonance region. In this domain, which can be characterized by Lambda^2/Q^2 << 1-beta << (Lambda^2/Q^2)^1/2, the structure function represents a new observable, which is highly sensitive to the small-x skewed gluon distribution. Our leading order calculation and the estimate of next-to-leading order corrections are consistent with available data and demonstrate the potential of more precise data to put further constraints on skewing effects.

11 pages, LaTeX, including five PostScript figures

References in corpus (3)

• Q^2 dependence of diffractive vector meson electroproduction
• Hard scattering factorization and light cone hamiltonian approach to diffractive processes
• Infrared safety of impact factors for colourless particle interactions

Cited by in corpus (9)

• Generalized Parton Distributions
• Unraveling hadron structure with generalized parton distributions
• Theory of deeply virtual Compton scattering on the nucleon
• Measurement and QCD Analysis of the Diffractive Deep-Inelastic Scattering Cross Section at HERA
• Diffractive Deep-Inelastic Scattering with a Leading Proton at HERA
• Deeply Virtual Compton Scattering and its Beam Charge Asymmetry in e^\pm p Collisions at HERA
• The Hadronic Final State at HERA
• Measurement of the Diffractive Longitudinal Structure Function F_L^D at HERA
• Diffractive phenomena