Eur. Phys. J. C 10, 703-713
DOI 10.1007/s100529900153
Neutrinos, their partners, and unification
G. Triantaphyllou
Institut für Theoretische Physik, Technische
Universität München,
James-Franck-Strasse, 85748 Garching, Germany
(e-mail: georg@ph.tum.de)
Received: 11 May 1999 / Published online: 28 September 1999
Abstract
Efforts to unify group-theoretically
the standard-model gauge interactions with
the generation structure of fermions and their mirror
partners should be
accompanied by the unification of the corresponding gauge
couplings. In this paper, the possibility of such a unification
is studied, and conclusions on possible symmetry-breaking channels and scales
as well as on the fermion content of the theory are drawn.
The breaking of some
of the symmetries allows various Majorana masses for neutrinos
and their mirror partners, so these are studied next.
Implications for neutrino mixings and
mass hierarchies in connection with recent experimental results,
as well as for electroweak precision tests, are then
discussed.
Copyright Springer-Verlag
