Speaker
Prof.
Samoil Bilenky
(JINR (Dubna))
Description
The Standard Model teaches us that in the framework of such general
principles as local gauge symmetry, unication of weak and electromag-
netic interactions and Brout-Englert-Higgs spontaneous breaking of the elec-
troweak symmetry nature chooses the simplest possibilities. Two-component
left-handed massless neutrino elds play crucial role in the determination of
the charged current structure of the Standard Model. The absence of the
right-handed neutrino elds in the Standard Model is the simplest, most
economical possibility. In such a scenario Majorana mass term is the only
possibility for neutrinos to be massive and mixed. Such mass term is gener-
ated by the lepton-number violating Weinberg eective Lagrangian. In this
approach three Majorana neutrino masses are suppressed with respect to the
masses of other fundamental fermions by the ratio of the electroweak scale
and a scale of a lepton-number violating physics. The discovery of the neu-
trinoless double -decay and absence of transitions of
avor neutrinos into
sterile states would be evidence in favor of the minimal scenario we advocate
here.
1
Primary author
Prof.
Samoil Bilenky
(JINR (Dubna))
