3 papers
hep-ph2026
Neutrinoless double decay and leptogenesis in seesaw model
Kazuo Fujikawa
The fermion in the Type I seesaw model, which is commonly identified with a Majorana fermion, is not a Majorana fermion and thus no neutrinoless dou…
hep-ph2024
Note on a BCS analogy of Majorana neutrinos
Kazuo Fujikawa, Anca Tureanu
In this note, we discuss an analogy between the BCS theory and the seesaw model of neutrinos. We believe that the analogy indicates some fundamental aspects of Majorana neutrinos.…
hep-ph2024
Two classes of Majorana neutrinos in the seesaw model
Kazuo Fujikawa, Anca Tureanu
The commonly used pseudo-C symmetry is not defined in Lagrangian field theory. In general, there exist two classes of Majorana fermions; the f…