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

Kazuo Fujikawa

It is customary to identify ${\psi }_{+}={\nu }_R+C{\overline{{\nu }_R}}^T$ with a Majorana fermion on the basis of chirality changing charge conjugation $\tilde{C}: ν_{R}\rightarrow C\overl…