What happens when a neutrino and an anti-neutrino interacts together? For example, what does a muon neutrino and anti-muon neutrino produce? it says in my book that it creates "muons and antimuons". But, how? Aren't the particle and the antiparticle annihilate when they interact with each other?
How can an electron neutrino turn a neutron into a proton? If you draw a feynnman diagram, there isn't a exchange particle that make the change occur?
Cheers.