Measurement of the proton structure function F2 at low Q2 in QED Compton scattering at HERA

摘要

The proton structure function F2 is measured using inelastic QED Compton events. The data were collected by H1 experiment at the HERA in 1997 and correspond to a luminosity of 9.25 pb–1. QED Compton events allow to access very low Q2 region, down to 0.5 GeV2 and Bjorken x up to ~ 0.06, a region that has not been covered by previous inclusive measurements at HERA. The results are in agreement with measurements from fixed targed lepton-nucleon scattering experiments.