2006/07/15 by William A. Ponce, Luis A. Sanchez, Luis A. Sánchez · 4 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1142/s0217732307021275
published as Mod.Phys.Lett.A22:435-448,2007 · 16 pages, no figures. To appear in Mod. Phys. Lett. A
arxiv created 2006/07/15 · openalex publication_date 2007/02/27 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
We carry out a systematic study of possible extensions of the standard model based on the gauge group SU (3) c ⊗ SU (4) L ⊗ U (1) X . We consider models with particles having exotic electric charges and also models which do not contain exotic electric charges in the gauge boson sector or in the fermion sector. For the first case an infinite number of models can, in principle, be constructed, while the restriction to non-exotic electric charges only allows for eight different anomaly-free models. Four of them are three-family models in the sense that anomalies cancel by an interplay between the three families, and another two are one-family models where anomalies cancel family by family as in the standard model. The remaining two are two-family models.