17-24 July 2013
KTH and Stockholm University Campus
Europe/Stockholm timezone

Higher twist effects in diffractive DIS at HERA

19 Jul 2013, 15:05
E1 (KTH Campus)


KTH Campus

Talk presentation QCD QCD


Mariusz Sadzikowski (Jagiellonian University)


I discuss a twist decomposition of difractive structure functions in the difractive deep inelastic scattering (DDIS) at HERA. At low photon virtuality and at large energy the data exhibit a strong excess above the twist-two NLO DGLAP description. It is found, that complementing the DGLAP fit by twist 4 and 6 components of the GBW saturation model leads to a good description of data. In conclusion, HERA provides the first, strong evidence of higher twist effects in DIS.

Primary author

Mariusz Sadzikowski (Jagiellonian University)


Presentation Materials