Analytic Perturbation Theory and Inclusive Tau Decay

Abstract

We apply analytic perturbation theory to the inclusive decay of a $\tau$ lepton into hadrons. It is shown that the resulting analyticity of the coupling constant strongly influences the value of the QCD $\Lambda$-parameter extracted from the experimental data on $\tau$ decay.

Comments: 10 pages, 2 figures, REVTeX, psfig, penultimate paragraph added