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Prospects for new physics from gauge left-right-colour-family grand unification hypothesis

Morais, António P. LU ; Pasechnik, Roman LU and Porod, Werner (2020) In European Physical Journal C 80(12).
Abstract

Given the tremendous phenomenological success of the Standard Model (SM) framework, it becomes increasingly important to understand to what extent its specific structure dynamically emerges from unification principles. In this study, we present a novel anomaly-free supersymmetric (SUSY) Grand Unification model based upon gauge trinification [SU(3)]3 symmetry and a local SU (2) F× U (1) F family symmetry, with particle spectra and gauge symmetries inspired by a possible reduction pattern E 8→ E 6× SU (2) F× U (1) F, with subsequent E6→[SU(3)]3 symmetry breaking step. In this framework, higher-dimensional operators of E 6 induce the threshold corrections in the... (More)

Given the tremendous phenomenological success of the Standard Model (SM) framework, it becomes increasingly important to understand to what extent its specific structure dynamically emerges from unification principles. In this study, we present a novel anomaly-free supersymmetric (SUSY) Grand Unification model based upon gauge trinification [SU(3)]3 symmetry and a local SU (2) F× U (1) F family symmetry, with particle spectra and gauge symmetries inspired by a possible reduction pattern E 8→ E 6× SU (2) F× U (1) F, with subsequent E6→[SU(3)]3 symmetry breaking step. In this framework, higher-dimensional operators of E 6 induce the threshold corrections in the gauge and Yukawa interactions leading, in particular, to only two distinct Yukawa couplings in the fundamental sector of the resulting [SU(3)]3×SU(2)F×U(1)F Lagrangian. Among the appealing features emergent in this framework are the Higgs-matter unification and a unique minimal three Higgs doublet scalar sector at the electroweak scale as well as tree-level hierarchies in the light fermion spectra consistent with those observed in nature. In addition, our framework reveals a variety of prospects for New Physics searches at the LHC and future colliders such as vector-like fermions, as well as rich scalar, gauge and neutrino sectors.

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type
Contribution to journal
publication status
published
subject
in
European Physical Journal C
volume
80
issue
12
article number
1162
publisher
Springer
external identifiers
  • scopus:85097741458
ISSN
1434-6044
DOI
10.1140/epjc/s10052-020-08710-4
language
English
LU publication?
yes
id
082ff96f-8260-4951-8063-0998614c0d12
date added to LUP
2021-01-07 13:51:57
date last changed
2022-01-27 17:26:04
@article{082ff96f-8260-4951-8063-0998614c0d12,
  abstract     = {{<p>Given the tremendous phenomenological success of the Standard Model (SM) framework, it becomes increasingly important to understand to what extent its specific structure dynamically emerges from unification principles. In this study, we present a novel anomaly-free supersymmetric (SUSY) Grand Unification model based upon gauge trinification [SU(3)]3 symmetry and a local SU (2) <sub>F</sub>× U (1) <sub>F</sub> family symmetry, with particle spectra and gauge symmetries inspired by a possible reduction pattern E <sub>8</sub>→ E <sub>6</sub>× SU (2) <sub>F</sub>× U (1) <sub>F</sub>, with subsequent E6→[SU(3)]3 symmetry breaking step. In this framework, higher-dimensional operators of E <sub>6</sub> induce the threshold corrections in the gauge and Yukawa interactions leading, in particular, to only two distinct Yukawa couplings in the fundamental sector of the resulting [SU(3)]3×SU(2)F×U(1)F Lagrangian. Among the appealing features emergent in this framework are the Higgs-matter unification and a unique minimal three Higgs doublet scalar sector at the electroweak scale as well as tree-level hierarchies in the light fermion spectra consistent with those observed in nature. In addition, our framework reveals a variety of prospects for New Physics searches at the LHC and future colliders such as vector-like fermions, as well as rich scalar, gauge and neutrino sectors.</p>}},
  author       = {{Morais, António P. and Pasechnik, Roman and Porod, Werner}},
  issn         = {{1434-6044}},
  language     = {{eng}},
  number       = {{12}},
  publisher    = {{Springer}},
  series       = {{European Physical Journal C}},
  title        = {{Prospects for new physics from gauge left-right-colour-family grand unification hypothesis}},
  url          = {{http://dx.doi.org/10.1140/epjc/s10052-020-08710-4}},
  doi          = {{10.1140/epjc/s10052-020-08710-4}},
  volume       = {{80}},
  year         = {{2020}},
}