Measurements of $α_s$ From Scaling Violations and From $R_τ$ at LEP
Abstract
Description
The results of two methods to extract the strong coupling constant, $α_s$, 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 $R_τ$, the ratio of hadronic to leptonic decay rates of the tau lepton, determine $α_s$ and, using moments of the invariant mass distribution in hadronic tau decays, the non-perturbative corrections to $R_τ$.
6 pages uuencode-gzipped postscript. LaTeX and individual figures can be found on http://ppewww.ph.gla.ac.uk/preprints/95/02
6 pages uuencode-gzipped postscript. LaTeX and individual figures can be found on http://ppewww.ph.gla.ac.uk/preprints/95/02