L. Epele et al., SPONTANEOUS CP VIOLATION IN AN SU(3)(L)CIRCLE-TIMES-U(1)(Y) ELECTROWEAK MODEL, Physics letters. Section B, 343(1-4), 1995, pp. 291-294
We study the possibility of finding spontaneous CP violation within an
SU(3)(L)XU(1)(Y) electroweak model. We show that the mechanism is all
owed for a certain range of the Higgs potential parameters only when a
scalar sextuplet is included to provide the lepton masses.