Constraints on $N_c$ in Extensions of the Standard Model
| dc.creator | Shrock, Robert | |
| dc.date | 2007-04-26 | |
| dc.date.accessioned | 2026-07-07T11:56:42Z | |
| dc.date.available | 2026-07-07T11:56:42Z | |
| dc.description | We consider a class of theories involving an extension of the Standard Model gauge group to an {\it a priori} arbitrary number of colors, $N_c$, and derive constraints on $N_c$. One motivation for this is the string theory landscape. For two natural classes of embeddings of this $N_c$-extended Standard Model in a supersymmetric grand unified theory, we show that requiring unbroken electromagnetic gauge invariance, asymptotic freedom of color, and three generations of quarks and leptons forces one to choose $N_c=3$. Similarly, we show that for a theory combining the $N_c$-extended Standard Model with a one-family SU(2)$_{TC}$ technicolor theory, only the value $N_c=3$ is allowed. | |
| dc.description | 4 pages, revtex | |
| dc.identifier | https://arxiv.org/abs/0704.3464 | |
| dc.identifier | http://arxiv.org/abs/0704.3464 | |
| dc.identifier | Phys.Rev.D76:055010,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.76.055010 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205628 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Constraints on $N_c$ in Extensions of the Standard Model | |
| dc.type | text |