W-propagator corrections to muon and tau leptonic decays

Abstract

We derive the corrections induced by the W-boson propagator to the differential rates of the leptonic decay of a polarized muon and tau lepton. Results are presented both for decays inclusive of inner bremsstrahlung as well as for radiative ones, when a photon emitted in the decay process is measured. The numerical effect of these corrections is discussed. The definition of the Fermi constant is briefly reviewed.

5 pages, no figures, accepted for publication

References in corpus (1)

• Mass effects in muon and semileptonic b -> c decays

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