Title

Measurement of αS from τ decays

Document Type

Article

Publication Date

8-24-1995

Abstract

We present measurements of spectral moments extracted from the invariant mass distributions of the final states of hadronic τ decay products recorded in the CLEO detector. From a fit of theoretical predictions to the measurements of spectral moments and the total hadronic decay width of the τ, we determine the strong coupling constant and a set of non-perturbative QCD parameters. The strong coupling constant is measured to be α (m ) = 0.306 ± 0.024, which when extrapolated to the Z mass, yields α (M ) = 0.114 ± 0.003. © 1995. s τ s z

Publication Name

Physics Letters B

Volume Number

356

First Page

580

Last Page

588

Issue Number

4

DOI

10.1016/0370-2693(95)00824-5

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