TY  - JOUR
AU  - Addazi, A.
AU  - Valle, J. W. F.
AU  - Vaquera-Araujo, C. A.
PY  - 2016
DA  - 2016//
TI  - String completion of an SU(3)(c) x SU(3)(L) x U(1)(X) electroweak model
T2  - Phys. Lett. B
JO  - Physics Letters B
SP  - 471
EP  - 478
VL  - 759
PB  - Elsevier Science Bv
KW  - Unification
KW  - Branes
KW  - String phenomenology
KW  - Neutrino mass
KW  - Neutron-antineutron oscillations
AB  - The extended electroweak SU(3)(c) circle times SU(3)(L) circle times U(1)(X) symmetry framework "explaining" the number of fermion families is revisited. While 331-based schemes can not easily be unified within the conventional field theory sense, we show how to do it within an approach based on D-branes and (un)oriented open strings, on Calabi-Yau singularities. We show how the theory can be UV-completed in a quiver setup, free of gauge and string anomalies. Lepton and baryon numbers are perturbatively conserved, so neutrinos are Dirac-type, and their lightness results from a novel TeV scale seesaw mechanism. Dynamical violation of baryon number by exotic instantons could induce neutron-antineutron oscillations, with proton decay and other dangerous R-parity violating processes strictly forbidden. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
SN  - 0370-2693
UR  - http://arxiv.org/abs/1604.02117
UR  - https://doi.org/10.1016/j.physletb.2016.06.015
DO  - 10.1016/j.physletb.2016.06.015
LA  - English
N1  - WOS:000380409200063
ID  - Addazi_etal2016
ER  -