Polychromatic Grand Unification
High Energy Physics - Phenomenology
2007-05-23 v1 High Energy Physics - Theory
Abstract
The possibility of achieving a gauge coupling grand unification by increasing the QCD degrees of freedom at higher energies is investigated. When confronted with precision low-energy data, the generic weak-mixing angle relation sin^2(theta_W) = N/2(N+1) requires N=7 colors at the GUT scale M_U ~ 10^17 GeV. With the exclusive addition of light Higgs doublets to the standard model particle content, such a unification may also occur if N=5 at M_U ~ 10^16 GeV.
Cite
@article{arxiv.hep-ph/0305092,
title = {Polychromatic Grand Unification},
author = {G. C. Branco and J. -M. Gerard and R. Gonzalez Felipe and B. M. Nobre},
journal= {arXiv preprint arXiv:hep-ph/0305092},
year = {2007}
}
Comments
4 pages, 2 figures