Light color octet scalars in the minimal SO(10) grand unification
Abstract
We analyze the relation between the present (and foreseen) bounds on matter stability and the presence of TeV-scale color octet scalar states in nonsupersymmetric SO(10) grand unification with one adjoint Higgs representation triggering the symmetry breaking. This scenario, discarded long ago due to tree-level tachyonic instabilities appearing in all phenomenologically viable breaking patterns, has been recently revived at the quantum level. By including the relevant two-loop corrections we find a tight correlation between the octet mass and the unification scale which either requires a light color octet scalar within the reach of the LHC or, alternatively, a proton lifetime accessible to the forthcoming megaton-scale facilities.
Keywords
Cite
@article{arxiv.1302.3401,
title = {Light color octet scalars in the minimal SO(10) grand unification},
author = {Stefano Bertolini and Luca Di Luzio and Michal Malinsky},
journal= {arXiv preprint arXiv:1302.3401},
year = {2015}
}
Comments
17 pages, 4 figures, 5 tables; minor corrections & references added in v2; published version