Determination of alpha_s(M_Z²) from hadronic event shape observables in e+e- annihilation

1996/12/11 by P.N. Burrows, P. N. Burrows, Burrows, P. N.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/9612008

9 pages and 2 figures in eps format. tar-ed, gzip-ed and uuencode-ed. To appear in proceedings ICHEP96.

arxiv created 1996/12/11 · openalex publication_date 1996/12/11 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The determination of alpha_s(M_Z²) using O(alpha_s²) calculations of hadronic event observables in e+e- annihilation is reviewed. The large scatter among alpha_s(M_Z²) values determined from different observables may be interpreted as arising from the effect of uncalculated higher-order contributions. The application of `optimised' perturbation theory and Pade approximants in an attempt to reduce this effect is discussed.

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