Structure function measurements at HERA
AIP conference proceedings1998pp. 619–622
Abstract
We report on the deep inelastic scattering structure functions measured by the ZEUS and H1 experiments at HERA from collisions of 27.5 GeV positrons and 820 GeV protons. The F2 structure function of the proton has been measured down to Q2=0.11 GeV2 and shows good agreement with perturbative QCD down to Q2=1.5 GeV2. The preliminary F2cc̄ cross section from 1995 measured in the range 3⩽Q2⩽170 GeV2 is consistent with the gluon extracted from F2 scaling violations. F2cc̄ is about 25% of the F2 structure function over this Q2 range.
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