DVCS via color dipoles: Nonperturbative effects

Abstract

We study the DVCS amplitude within the color dipole approach. The light-cone wave function of a real photon is evaluated in the instanton vacuum model. Our parameter free calculations are able to describe H1 data, both the absolute values and the $t$-dependences, at medium-high values of $Q^2$. The $Q^2$ dependence is found to be sensitive to the choice of the phenomenological cross section fitted to DIS data.

11 pages; references added, bibliographic inaccuracy corrected

References in corpus (6)

• Dynamical parton distributions of the nucleon and very small-x physics
• Azimuthal anisotropy of direct photons
• Azimuthal Asymmetry of pions in pp and pA collisions
• Evidences for two scales in hadrons
• Low energy constants of \chiPT from the instanton vacuum model
• Damping of forward neutrons in pp collisions

Cited by in corpus (1)

• Real Compton Scattering via Color Dipoles