Gauge coupling unification with extra Higgs doublets

Abstract

Gauge coupling unification is studied within the framework where there are extra Higgs doublets and $E_6$ exotic fields. Supersymmetric models and nonsupersymmetric models are investigated, and a catalog of models with gauge coupling unification is presented.Comment: 6 pages, 2 figures, To appear in Fortsch.Physi

The Next Higgs Boson(s) and a Higgs-Yukawa Universality

“…I view unification as something we might ultimately retrieve, however, to have the simplest unification, such as SU (5) already requires further extension of the scalar sector since the 24 is not contained in our extended spectrum, while multiplets of the scalar 5 are present. Eight Higgs doublets can easily unify in the SM [15]. Beyond this it appears that to have couping constant unification may require the ad hoc addition of more color states that don't interfere with the running of g t .…”

Computable conditions for order-2 CP symmetry in NHDM potentials

“…Below are the numerical values for the parameter point used in the example analyzed in section 4.3. All the non-zero elements are listed, except those which can be obtained by JHEP05(2024)260 3,4,5,6,22,23,24,25,26,27, 8,10,11,12,15,28,29,31,32,33,36,40,41,42, 16,17,19,20,21,34,37,38, Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.…”

“…5HDMs in the context of higher order CP s were scrutinized in [9]. A 6HDM for Dark Matter was examined in [19], and Grand Unified Theories with eight and nine Higgs doublets were studied in [20] and [21], respectively. Moreover, in the "Private Higgs" extension of the SM each charged fermion acquire mass from its own Higgs doublet, through O(1) Yukawa couplings, and is hence another example of a model with N = 9 Higgs doublets [22,23].…”

E6GUT through effects of dimension-5 operators

“…It has been pointed out [43][44][45] that E 6 is uniquely selected among many GUT groups, if one demands that (1) the theory is automatically anomaly free, (2) every generation of quark/lepton fields belongs to a single irreducible representation (irrep) of the GUT group, and (3) the Higgs fields, which are necessary for inducing the symmetry breaking down to SU U 3 1 C eḿ ( ) ( ), fall in the representations that can be provided by the fermion bilinears. Recently some models and their low energy phenomenology originated from E 6 GUT generated further interests [46][47][48][49][50][51][52][53][54].…”