1206.1732 (M. Sadzikowski et al.)

Evidence for breakdown of the DGLAP description in diffractive DIS at
HERA    [PDF]

M. Sadzikowski, L. Motyka, W. Slominski

HERA data on diffractive DIS show deviations from twist 2 DGLAP predictions below $Q^2\sim 5$ GeV$^2$ at low pomeron $\xi$, which may reach up to 100%. These deviations are consistent with higher twists effects extracted from the saturation model. It is a first direct evidence for the higher twists in DIS. This finding affects determination of the diffractive parton densities that are used for the predictions at the LHC.

View original: http://arxiv.org/abs/1206.1732