, Volume 13, Issue 6, pp 1240-1262

The electron decay mode of the pion

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This paper presents evidence for the existence of the electron decay mode of the pion. The branching-ratio we have found for this mode, compared with the normal muon decay, is (1.22 ± 0.30) · 10−4. This is in good agreement with theVA theory of weak interactions.


Si descrive un esperimento in cui viene provata l’esistenza del decadimento elettronico del pione. Il rapporto πe/πμ è stato trovato uguale a (1.22 ± 0.30) · 10−4 in buon accordo con la teoriaV-A delle interazioni deboli.