Which Can Proceed Through a Purely Electromagnetic Interaction?

[through.time]

The production of a muon/antimuon pair from an electron and positron
or...
The production of a neutrino/antineutrino pair from an electron and a positron?

The only weak interactions I know of are beta-minus decay, beta-plus decay and electron capture. All the sources I've found say they both involve weak interactions :(

 

[Dick]

Yes, they both involve the weak interaction. But one of them can proceed through a purely electromagnetic interaction. Which one?