Absence of Majorana-Weyl fermions in d=4 and the theory of Majorana fermions

Kazuo Fujikawa

It is customary to identify $\ddot{I}{ˆ}_{+}=\hat{I}{½}_R+C{\overline{\hat{I}{½}_R}}^T$ with a Majorana fermion on the basis of chirality changing charge conjugation $\tilde{C}: ν_{R}\rightarrow C\o…