Proton and Photon Structure

Details Proton and Photon Structure Proton and Photon Structure

2001-11-15

arxiv.org/abs/hep-ex/0111052v1

Int.J.Mod.Phys. A17 (2002) 3171-3184

Physics

High Energy Physics

High Energy Physics - Experiment

19 pages, 15 figures, invited talk at the XX International Symposium on Lepton and Photon Interactions at High Energies, Rome,

Scientific paper

10.1142/S0217751X02012673

The increasing precision of the measurements on the proton structure and an improved treatment of the correlated systematic experimental errors constitute a major step forward in our understanding of the flavour decomposition of the proton and the momentum distributions of the various flavours. Together with theoretical progress on the next-to-next-to-leading order QCD corrections to deep inelastic scattering processes, the proton measurements already imply a new level of precision for the strong coupling constant alpha-s. The progress in the measurements on the quantum fluctuations of the photon allows questions on the universal properties of hadronic structures to be addressed.

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