PT Journal
AU Hirsch, M
   Srivastava, R
   Valle, JWF
TI Can one ever prove that neutrinos are Dirac particles?
SO Physics Letters B
JI Phys. Lett. B
PY 2018
BP 302
EP 305
VL 781
DI 10.1016/j.physletb.2018.03.073
LA English
AB According to the "Black Box" theorem the experimental confirmation of neutrinoless double beta decay (0 nu 2 beta) would imply that at least one of the neutrinos is a Majorana particle. However, a null 0 nu 2 beta signal cannot decide the nature of neutrinos, as it can be suppressed even for Majorana neutrinos. In this letter we argue that if the null 0 nu 2 beta decay signal is accompanied by a 0 nu 2 beta quadruple beta decay signal, then at least one neutrino should be a Dirac particle. This argument holds irrespective of the underlying processes leading to such decays.
ER