Artículos de revistas
Spontaneous breaking of a global symmetry in a 3-3-1 model
Fecha
1999-12-01Registro en:
Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 60, n. 11, p. 1-6, 1999.
0556-2821
10.1103/PhysRevD.60.115003
WOS:000084138100075
2-s2.0-18044388597
2-s2.0-18044388597.pdf
6783433390235727
0000-0001-5279-8438
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
In a 3-3-1 model in which the lepton masses arise from a scalar sextet it is possible to break spontaneously a global symmetry which implies in a pseudoscalar Majoron-like Goldstone boson. This Majoron does not mix with any other scalar fields and for this reason it does not couple, at the tree level, to either the charged leptons or to the quarks. Moreover, its interaction with neutrinos is diagonal. We also argue that there is a set of parameters in which the model can be consistent with the invisible Z0 width and that heavy neutrinos can decay sufficiently rapid by Majoron emission, having a lifetime shorter than the age of the universe. ©1999 The American Physical Society.