Measurements of $α_s$ From Scaling Violations and From $R_τ$ at LEP

Details Measurements of $α_s$ From Scaling Violations and From $R_τ$ at LEP Measurements of $α_s$ From Scaling Violations and From $R_τ$ at LEP

1995-07-19

arxiv.org/abs/hep-ex/9507010v1

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages uuencode-gzipped postscript. LaTeX and individual figures can be found on http://ppewww.ph.gla.ac.uk/preprints/95/02

Scientific paper

The results of two methods to extract the strong coupling constant, $\alpha_s$, are reviewed for the LEP experiments. In the first, scaling violations in the scaled momentum distributions of charged particles at LEP and at lower energy experiments are employed. In the second, QCD corrections to $R_\tau$, the ratio of hadronic to leptonic decay rates of the tau lepton, determine $\alpha_s$ and, using moments of the invariant mass distribution in hadronic tau decays, the non-perturbative corrections to $R_\tau$.

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