Proton Structure Measurements and the HERAPDF fit
Jan Kretzschmar (for the H1, the ZEUS Collaborations)
TL;DR
This paper presents combined deep inelastic scattering measurements from H1 and ZEUS, leading to an improved NLO QCD fit called HERAPDF 0.1 with reduced experimental uncertainties in parton density functions.
Contribution
It introduces a model-independent combination procedure for scattering data and performs a unified NLO QCD fit to derive more precise PDFs.
Findings
Reduced uncertainties in PDFs compared to previous measurements
Successful combination of H1 and ZEUS data using a coherent systematic error treatment
Enhanced precision in proton structure understanding
Abstract
New and previously published measurements on the deep inelastic scattering cross section by the H1 and ZEUS collaborations are presented. The uncertainties can be significantly reduced by a model independent combination procedure, which treats the systematic error correlations in a coherent way. The combined H1 and ZEUS measurements of the inclusive neutral and charged current cross sections are used to perform a common NLO QCD fit, called HERAPDF 0.1. The resulting set of parton density functions (PDFs) have a much improved experimental uncertainty compared to previous extractions using the uncombined H1 or ZEUS data.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions