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Roman Pasechnik

Senior lecturer

Typical working day..

Scale hierarchies, symmetry breaking, and particle spectra in SU(3)-family extended SUSY trinification

Author

  • José E. Camargo-Molina
  • António P. Morais
  • Astrid Ordell
  • Roman Pasechnik
  • Jonas Wessén

Summary, in English

A unification of left-right SU(3)L×SU(3)R, color SU(3)C, and family SU(3)F symmetries in a maximal rank-8 subgroup of E8 is proposed as a landmark for future explorations beyond the Standard Model (SM). We discuss the implications of this scheme in a supersymmetric (SUSY) model based on the trinification gauge [SU(3)]3 and global SU(3)F-family symmetries. Among the key properties of this model are the unification of SM Higgs and lepton sectors, a common Yukawa coupling for chiral fermions, the absence of the μ problem, gauge couplings unification, and proton stability to all orders in perturbation theory. The minimal field content consistent with a SM-like effective theory at low energies is composed of one E6 27-plet per generation as well as three gauge and one family SU(3) octets inspired by the fundamental sector of E8. The details of the corresponding (SUSY and gauge) symmetry-breaking scheme, multiscale gauge couplings' evolution, and resulting effective low-energy scenarios are discussed.

Department/s

  • Theoretical Particle Physics

Publishing year

2019

Language

English

Publication/Series

Physical Review D

Volume

99

Issue

3

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Status

Published

Project

  • Model building and pheno

ISBN/ISSN/Other

  • ISSN: 2470-0010