Standard and Non-Standard Extra Matter for Non-Supersymmetric Unification
Abstract
We perform a general 1-loop analysis by adding extra matter to the SM content, as well as by allowing a non-standard U(1)Y normalization in order to achieve unification. We find numerous solutions with U(1)Y only charged extra matter and unification scale of the order of MU=10^{16} GeV, or with SU(2) charged extra matter with lower MU. We next identify the SM extra matter as originating from the breaking of SO(10) either through the Pati-Salam group SU(4)xSU(2)LxSU(2)R or the flipped SU(5). In both cases, unification can be achieved with a rather minimal extra content. Contrary to the one-step SU(5) unification, in the two-step SO(10) unification we are discussing, coulored extra matter is not necessary. Finally, we discuss a split-supersymmetry like case, where extra matter is added to the split supersymmetric spectrum in order to attain 1-loop unification.
Cite
@article{arxiv.hep-ph/0506144,
title = {Standard and Non-Standard Extra Matter for Non-Supersymmetric Unification},
author = {Alex Kehagias and N. D. Tracas},
journal= {arXiv preprint arXiv:hep-ph/0506144},
year = {2016}
}
Comments
14 pages, 6 figs, references added