I want to deduce the Feynman rules for neutrino magnetic moment, and there are Dirac and Majorana terms for this
LD=μijˉνiLσαβ νjRFαβ
LM=μijˉνciσαβ νjFαβ
I can get the Feynman rules for Dirac case using field theory techniques but I don't see how knowing that the Majorana field has the condition νc=ν can change the results?!
any good refs on this?