TY  - JOUR
AU  - Hirsch, M.
AU  - Srivastava, R.
AU  - Valle, J. W. F.
PY  - 2018
DA  - 2018//
TI  - Can one ever prove that neutrinos are Dirac particles?
T2  - Phys. Lett. B
JO  - Physics Letters B
SP  - 302
EP  - 305
VL  - 781
PB  - Elsevier Science Bv
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.
SN  - 0370-2693
UR  - http://arxiv.org/abs/1711.06181
UR  - https://doi.org/10.1016/j.physletb.2018.03.073
DO  - 10.1016/j.physletb.2018.03.073
LA  - English
N1  - WOS:000435653100039
ID  - Hirsch_etal2018
ER  -