P. V. Dong, H. T. Hung, H. N. Long
We show that there is an infinite number of U(1) symmetries like Peccei-Quinn symmetry in the 3-3-1 model with minimal scalar sector. Moreover, all of them are completely broken due to the gauge symmetry breaking with the model's scalars. There is no any residual Peccei-Quinn symmetry. Because of the minimal scalar content there are some quarks that are massless at tree-level, but they can get consistent mass contributions at one-loop due to this fact. Interestingly, axions as associated with the mentioned U(1)s (including Majoron due to lepton-charge breaking) are all gauged away along with the model's Goldstone bosons.
View original:
http://arxiv.org/abs/1205.5648
No comments:
Post a Comment