### Résumé du preprint DAPNIA-05-703

DAPNIA-05-703
Extraction of the skewing factor from the DIS/DVCS ratio.
L. Favart, M.V.T. Machado, L. Schoeffel
The skewing factor, defined as the ratio of the imaginary parts of the amplitudes $Im A(\\gamma^* p \\to \\gamma^* p)/Im A(\\gamma^* p \\to \\gamma p)$ is extracted for the first time from the data using recent Deeply Virtual Compton Scattering (DVCS) and the inclusive inelastic cross section measurements at DESY-HERA. The results values are compared to theoretical predictions for NLO QCD and the colour dipole approach.