Splitting Triplet and Doublet in Extra Dimensions
Abstract
A novel mechanism to realize the triplet-doublet splitting in supersymmetric SU(5) grand unified theories is proposed in the framework of higher dimensional theories where chiral multiplets are localized due to kink configuration of a SU(5) singlet. An adjoint Higgs field which spontaneously breaks the SU(5) gauge symmetry is assumed to be involved with the localization process, splitting the wave functions of the color-triplet Higgs from its doublet counterpart. The resulting effective four-dimensional theory does not possess manifest SU(5) invariance. By adjusting couplings, the doublet mass can be exponentially suppressed. We also show that dimension 5 proton decay from triplet Higgs exchange can be suppressed to a negligible level.
Cite
@article{arxiv.hep-ph/0104103,
title = {Splitting Triplet and Doublet in Extra Dimensions},
author = {Mitsuru Kakizaki and Masahiro Yamaguchi},
journal= {arXiv preprint arXiv:hep-ph/0104103},
year = {2017}
}
Comments
9 pages, 2 figures, some references added