A note on radiative corrections to $μ$ and $τ$ decays

Details A note on radiative corrections to $μ$ and $τ$ decays A note on radiative corrections to $μ$ and $τ$ decays

1995-07-05

arxiv.org/abs/hep-ph/9507232v2

JETP Lett. 62 (1995) 469-471; Pisma Zh.Eksp.Teor.Fiz. 62 (1995) 453-455

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, REVTeX, reference added

Scientific paper

Radiative corrections in the order ${\alpha\over{2\pi}}{{m^2_e}\over m^2_\mu}$ to $\mu $- and ${\alpha\over{2\pi}}{{m^2_\mu}\over m^2_\tau}$ to $\tau $- decays are calculated. The decay width is enhanced by $4.48\cdot 10^{-3} ({\alpha\over{2\pi}})$ in the muon case and by $0.283 ({\alpha\over{2\pi}})$ for the $\tau \rightarrow \mu \nu_\tau \bar\nu_\mu (\gamma)$ decay. Influence of these corrections on the electroweak data is discussed.

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