Reviving trinification models through an 
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-extended supersymmetric GUT

Camargo-Molina, José Eliel; Morais, A.; Ordell, Astrid; Pasechnik, Roman; Sampaio, Marco O. P.; Wessén, Jonas

doi:10.1103/physrevd.95.075031

Cited by 29 publications

(38 citation statements)

References 51 publications

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“…The SHUT model first presented in Ref. [39], in contrast to the Glashow's trinification, introduces the global family symmetry SU(3) F which acts in the generation-space. In this case, the light Higgs and lepton superfields, as well as quarks and colored scalars, all are unified into a single (27,3)-plet under E 6 × SU(3) F symmetry, i.e.…”

Section: Left-right-color-family Unificationmentioning

confidence: 99%

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

et al. 2019

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A unification of left-right SU(3)L × SU(3)R, colour 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, multi-scale gauge couplings' evolution, and resulting effective low-energy scenarios are discussed.

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Section: Left-right-color-family Unificationmentioning

confidence: 99%

“…In this paper, we explore in detail the SUSY T-GUT model proposed in [39] with a global SU(3) F family symmetry inspired by the embedding of E 6 × SU(3) into E 8 .…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2019

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“…The fundamental challenge behind the issues of trinification is the complicated vacuum structures and the large number of parameters they depend on. Solutions to this problem involve the addition of family symmetries which reduce the number of parameters and facilitate the study of the symmetry breaking vacuum [230], further simplified by embedding the theory into larger dimensional groups such as E 8 [231,232].…”

Section: Trinificationmentioning

confidence: 99%

GUT Physics in the Era of the LHC

et al. 2019

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Grand Unified Theories (GUTs) are one of the most interesting high-energy completions of the Standard Model, because they provide a rich, powerful and elegant group-theoretical framework able to resolve a variety of problems remaining in our current understanding of particle physics. They usually act as motivators for many low energy BSM theories, such as left-right symmetric or supersymmetric models, and they serve to fill the gap between the experimentally reachable low energies and the physics in the ultraviolet. In recent years, however, they have fallen slightly from the spotlight, in favour of "simplified" models with more specific phenomenological predictions. The aim of this review is to summarize the state of the art on GUTs and argue for their importance in modern physics. Recent advances in experiments permit to test the predictions of GUTs at different energy scales. First, as GUTs can play a role in the inflationary dynamics of the early Universe, their imprints could be found in the CMB observations by the Planck satellite. Remarkably enough, GUTs could manifest themselves also in terrestrial tests; several planned experiments aim to probe the proton stability and to establish order of magnitude higher bounds on its lifetime. Moreover, the predictions of specific GUT models could be tested even at the LHC thanks to its high energy reach, via searches for exotic states or additional contributions to flavour anomalies.

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“…A novel set of trinification-based GUTs (or T-GUTs, in what follows) was proposed by some of the authors in both SUSY [61,62] and non-SUSY realisations [67]. The minimal field content of each of these realisations transforms according to the gauge SU(3) C × SU(3) L × SU(3) R and global-family 2 SU(3) F symmetries, which are sequentially broken down to the 2 It is well known that global continuous symmetries are problematic.…”

Section: Shut-inspired Thdsm Scenariomentioning

confidence: 99%

“…As already discussed in Refs. [61,62] we take this as a simplistic approach of a complete anomaly-free model where the family symmetry is also local. We argue that the low-scale properties of such a complete model and its simplified version are identical in the limit of small SU(3)F gauge couplings.…”

Section: Shut-inspired Thdsm Scenariomentioning

confidence: 99%

Electroweak phase transitions in multi-Higgs models: the case of Trinification-inspired THDSM

Vieu

Morais

Pasechnik

2018

J. Cosmol. Astropart. Phys.

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The rich vacuum structure of multi-Higgs extensions of the Standard Model (SM) may have interesting cosmological implications for the electroweak phase transition (EWPT). As an important example of such class of models, we consider a particularly simple low-energy SM-like limit of a recently proposed Grand-Unified Trinification model with the scalar sector composed of two Higgs doublets and a complex singlet and with a global U(1) family symmetry. The fermion sector of this model is extended with a family of vector-like quarks which enhances CP violation. With the current study, we aim at exploring the generic vacuum structure and uncovering the features of the EWPT in this model relevant for cosmology. We show the existence of different phase transition patterns providing strong departure from thermal equilibrium. Most of these observations are not specific to the considered model and may generically be expected in other multi-Higgs extensions of the SM.

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Reviving trinification models through an E6 -extended supersymmetric GUT

Cited by 29 publications

References 51 publications

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

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

GUT Physics in the Era of the LHC

Electroweak phase transitions in multi-Higgs models: the case of Trinification-inspired THDSM

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