Measurement of Azimuthal Asymmetries in Deep Inelastic Scattering

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 with the ZEUS detector 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.

19 pages - 4 figures. Included referee's comments

References in corpus (7)

• Improved Parton Distributions from Global Analysis of Recent Deep Inelastic Scattering and Inclusive Jet Data
• LEPTO 6.5 - A Monte Carlo Generator for Deep Inelastic Lepton-Nucleon Scattering
• A Measurement and QCD Analysis of the Proton Structure Function $F_2(x,Q^2)$ at HERA
• Measurement of the F2 structure function in deep inelastic scattering using 1994 data from the ZEUS detector at HERA
• Pion and Kaon Production in $e^{+}{e}^{-}$ and $ep$ Collisions at Next-to-Leading Order
• Soft Colour Interactions as the Origin of Rapidity Gaps in DIS
• Azimuthal Asymmetries in Hadronic Final States at HERA

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