Charm and Beauty Photoproduction at HERA
Benno List (for the H1, ZEUS Collaborations)
TL;DR
This paper presents new measurements of charm and beauty quark photoproduction at HERA, testing perturbative QCD predictions with improved data and highlighting the need for more precise theoretical calculations.
Contribution
It provides updated experimental data on charm and beauty production using D* meson tagging and lepton reconstruction, comparing results with NLO QCD calculations.
Findings
NLO QCD describes the data well overall
Large scale uncertainties dominate over experimental errors
Results emphasize need for more precise theoretical calculations
Abstract
After the completion of data taking at HERA-2, a large data set is at hand to study the photoproduction of charm and beauty quarks in ep collisions. New measurements of charm production based on D^* meson tagging and beauty production based on muon and electron reconstruction test perturbative QCD calculations with improved accuracy. In general, QCD calculations at NLO describe the data well. The scale uncertainties are, however, large and dominate over the experimental uncertainties, calling for more precise calculations.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions