The electromagnetic current vanishes identically in the Majorana case: http://users.jyu.fi/~hetahein/tiede/virta.pdf" .
In the case someone cannot open the pdf, here is the formula:
\overline{\psi}\gamma^{\mu}\psi = \overline{\psi^{C}}\gamma^{\mu}\psi^{C} =...
A question concerning Feynman rules for Dirac vs Majorana neutrinos.
Take e.g. the scattering process:
electron + positron -> electron neutrino + electron antineutrino.
Following the electroweak Feynman rules we can calculate an expression for the unpolarized differential cross section...
For my diploma thesis I must provide a calculation that reproduces the
results given on page 46 of the paper hep-ph/0309342 . For those who do
not want to look it up, I briefly explain what it is about: It concerns
the two-body scattering processes
(1) N + V => L + H,
(2) N + L => V + H,
(3) N...
People say that if neutrinos are Majorana particles, they are "identical to their anti particle". But anti neutrinos are obviously different from neutrinos. They produce anti-leptons rather than leptons in the scattering process. So the only difference I can image is the helicity, however that...