Determinations of the Strong Coupling at HERA
Thomas Schoerner-Sadenius (DESY)
TL;DR
This paper reviews the methods and results of determining the strong coupling constant alpha_s at HERA, highlighting jet physics contributions, comparing with world averages, and introducing a related proton PDF set.
Contribution
It provides a comprehensive overview of alpha_s determinations at HERA, including jet-based methods and the HERA-PDF 1.6 set, offering updated insights and data.
Findings
HERA measurements of alpha_s are consistent with world averages.
Jet final states are crucial for alpha_s determinations at HERA.
The HERA-PDF 1.6 set incorporates jet data for improved proton structure understanding.
Abstract
The status of determinations of the QCD coupling constant, alphas, at HERA is reviewed. Since jet final states provide the most relevant input to the HERA determinations of alphas, the relevant methods used in and results from jet physics are also discussed. Furthermore, HERA and world averages of alphas values are presented. Finally, the HERA-PDF 1.6 proton parton distribution function set which also uses jet final-state data is introduced.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions