-1
$\begingroup$

Why does weak interaction occur when a muon decays? Why can't electromagnetic interaction occur when a muon decays?

$\endgroup$
0
$\begingroup$

Because muon number and electron number are conserved:

$$ \mu^- \rightarrow e^- + \gamma $$

violates those conservation laws.

$\endgroup$
  • $\begingroup$ Neutrino mixing violates lepton flavour conservation. $\mu \to e \gamma$ is allowed but extremely suppressed. $\endgroup$ – dukwon Oct 19 '18 at 6:52

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.