Question

Answer the following multiple select question. Which of the following decays cannot occur because the law of conservation of lepton number is violated?

Answer 1

The decays which are lepton number violating are :

$\mu^+ \rightarrow e^+ + \nu_e \text{(This decay violates muon number)}$

$\pi^+ \rightarrow e^+ + \nu_e + \nu_\mu \text{ (This decay violates muon number)}$

$n \rightarrow p + e^- \text{ (This decay violates electron number)}$