1998/12/21 by S. Bethke, Bethke, S.
Earth and Planetary Sciences · Physics and Astronomy · #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Precipitation Measurement and Analysis #hep-ex #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ex/9812026
Talk presented at the $IV^{th}$ Int. Symp. on Radiative Corrections, Barcelona, Sept. 8-12, 1998. 18 pages, 13 eps-figures; uses sprocl.sty and psfig.sty
arxiv created 1998/12/21 · openalex publication_date 1998/12/21 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recent results on jet physics and tests of QCD from hadronic final states in e+e- annihilation at PETRA and at LEP are reviewed, with special emphasis on hadronic event shapes, charged particle production rates, properties of quark and gluon jets and determinations of αs. The data in the entire energy range from PETRA to LEP-2 are in broad agreement with the QCD predictions. The world summary of measurements of αs is updated and a detailed discussion of various methods to determine the overall error of αs (MZ) is presented. The new world average is αs (MZ) = 0.119 ± 0.004. The size of the error depends on the treatment of correlated uncertainties.