Hera Precision Measurements and Impact for LHC Predictions

Understand

A QCD fit analysis to the combined HERA inclusive deep inelastic cross sections measured by the H1 and ZEUS collaborations for $e^\pm p$ scattering to extract HERAPDF sets is presented.

• The results are used for predictions of $ p\bar{p}$ processes at Tevatron and $pp$ processes at the LHC.
• The QCD analysis has been extended to include the combined HERA II measurements at high $Q^2$ resulting in the HERAPDF1.5 sets, with full estimation of uncertainties.
• The precision of the new PDFs at high $x$ is considerably improved, particularly in the valence sector.