HERA Collider Results

Abstract

The final results on the combination of all inclusive deep-inelastic scattering cross section data from the H1 and ZEUS experiments at HERA are reviewed. The parton distribution functions (PDFs) extracted from these data (HERAPDF2.0) and from HERA data on heavy flavour production and jet production are also presented (HERAPDF2.0Jets). The use of various heavy flavour schemes is compared and the sensitivity of the data to cuts on Q2 is explored. When jet data are included in the fits, a competitive value of $\alpha_s(M_Z)=0.1184 \pm 0.0016$ is extracted at NLO, excluding scale uncertaintiesComment: Plenary talk at the XXIII International Workshop on Deep-Inelastic Scattering, 27th April-1st May 2015, Dallas, Texas. 14 pages, 18 figures. Based on the analysis of the H1 and ZEUS collaboration