QCD at high energy (experiments)

Abstract

Recent measurements of QCD interactions involving large momentum transfers are reviewed. The status of measurements of the strong coupling constant is summarised. Recent developments in the measurement and interpretation of deep inelastic scattering, proton-anti-proton collisions and two-photon processes are discussed. While QCD at next-to-leading order gives a qualitative description of many processes, next-to-NLO calculations are now required to allow quantitative information to be extracted from hadron-initiated multijet data. This is illustrated by a discussion of recent data on the photoproduction of dijet events at HERA.

Talk presented at the $31^{\mathrm{st}}$ International Conference on High Energy Physics, Amsterdam, 24-31 July 2002. 18 pages, 30 figures

References in corpus (24)

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• Global QCD Analysis of Parton Structure of the Nucleon: CTEQ5 Parton Distributions
• Deep-Inelastic Inclusive ep Scattering at Low x and a Determination of alpha_s
• MRST2001: partons and alpha_S from precise deep inelastic scattering and Tevatron jet data
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• NNLO global parton analysis
• A general approach to jet cross sections in QCD
• Proof of Factorization for Diffractive Hard Scattering
• Jet photoproduction at HERA
• Determination of the QCD Coupling ${\alpha }_s$
• Measurement of Neutral and Charged Current Cross Sections in Electron-Proton Collisions at High Q^2
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• Inclusive Jet Production in pbar p Collisions
• Measurement of the Inclusive Jet Cross Section in $\bar{p}p$ collisions at $\sqrt{s}=1.8$ TeV
• High-p_T Jets in pbarp Collisions at sqrt{s} = 630 and 1800 GeV
• An Analysis of Diffraction in Deep-Inelastic Scattering
• Measurement of High-Q^2 Charged-Current e^+p Deep Inelastic Scattering Cross Sections at HERA
• Measurement of high-Q2 charged current cross sections in e-p deep inelastic scattering at HERA
• Measurement of the Strong Coupling Constant from Inclusive Jet Production at the Tevatron $\bar{p}p$ Collider
• The Scale Dependence of the Hadron Multiplicity in Quark and Gluon Jets and a Precise Determination of $C_A/C_F$
• A Simultaneous Measurement of the QCD Colour Factors and the Strong Coupling
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• Strong Coupling Constant from the Photon Structure Function
• Search for R-Parity Violating Production of Single Sneutrinos in e+e- Collisions at sqrt(s) = 189-209GeV