Summary
The energy distribution and polarization of muons and electrons are calculated assuming an interaction through a vector current of definite isospin character, and using form factors obtained by means of dispersion relations. The effect of the K* resonance is taken into account. The spectra, and to a lesser extent the polarization, are quite insensitive to this effect.
Riassunto
Si è calcolata la distribuzione dell’energia e la polarizzazione dei muoni e degli elettroni, facendo l’ipotesi di una interazione tramite una corrente vettoriale con deflniti caratteri di isospin, ed usando i fattori di forma ottenuti a mezzo delle relazioni di dispersione. Si tien conto dell’effetto della risonanza K*. Gli spettri, ed in misura minore la polarizzazione, sono pressochè insensibili a questo effetto.
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Acioli, J.L., MacDowell, S.W. The K +μ3 and K +e3 decay through a current of definite isotopic rank. Nuovo Cim 24, 606–613 (1962). https://doi.org/10.1007/BF02816712
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DOI: https://doi.org/10.1007/BF02816712