The Measurement of Azimuthal Asymmetries in Deep Inelastic Scattering
N H Brook (University of Bristol, on behalf of the ZEUS Collab.)
TL;DR
This paper reports the first observation of azimuthal asymmetries in deep inelastic scattering, linking them to perturbative QCD processes through measurements of charged hadron distributions at HERA.
Contribution
It provides the first experimental evidence of azimuthal asymmetries in deep inelastic scattering attributable to perturbative QCD.
Findings
Azimuthal asymmetries observed in charged hadron distributions.
Dependence of asymmetries on transverse momenta measured.
Asymmetries attributed to perturbative QCD processes.
Abstract
The distribution of the azimuthal angle for the charged hadrons has been studied in the hadronic centre-of-mass system for neutral current deep inelastic positron-proton scattering at HERA. Measurements of the dependence of the moments of this distribution on the transverse momenta of the charged hadrons are presented. Asymmetries that can be unambiguously attributed to perturbative QCD processes have been observed for the first time.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research