Surveying the SO(10) model landscape: The left-right symmetric case

Deppisch, Frank F.; Gonzalo, Tomás E.; Gráf, Lukáš

doi:10.1103/physrevd.96.055003

Cited by 22 publications

(14 citation statements)

References 104 publications

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“…This particular grand unification theory has been studied for quite some time [40,41] and is considered a relatively simple and promising unification model [42,43]. This gauge group may undertake symmetry breaking to SU(3) × SU(2) × SU(2) × U(1) as an intermediary step before reduction to the gauge group of the standard model [44]. Thus, we could take, for example, an SU(3) core with two shells provided by the symmetry breaking from the SU(2) × SU(2) subgroup.…”

Section: Discussionmentioning

confidence: 99%

Multimagnetic monopoles

2021

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In this work we investigate the presence of magnetic monopoles that engender multimagnetic structures, which arise from an appropriate extension of the $$\mathrm{SU(2)}$$ SU ( 2 ) gauge group. The investigation is based on a modified relativistic theory that contain several gauge and matter fields, leading to a Bogomol’nyi bound and thus to a first order framework, from which stable multimagnetic solutions can be constructed. We illustrate our findings with several examples of stable magnetic monopoles with multimagnetic properties.

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Section: Discussionmentioning

confidence: 99%

Multimagnetic monopoles

2021

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“…universal gauginos at the GUT scale along with suitable choice of intermediate symmetry and breaking scale[140]. We have found in our work that in order to have the intermediatesymmetry breaking above 10 12 GeV, as favoured by cosmology, the SUSY breaking scale cannot be pushed beyond ∼ 30 TeV and it depends on both the intermediate symmetry group and scale.…”

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confidence: 79%

Roadmap of left-right models based on GUTs

et al. 2018

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We perform a detailed study of the grand unified theories SO (10) and E(6) with left-right intermediate gauge symmetries of the form SU (N ) L ⊗ SU (N ) R ⊗ G. Proton decay lifetime constrains the unification scale to be 10 16 GeV and, as discussed in this paper, unwanted cosmological relics can be evaded if the intermediate symmetry scale is 10 12 GeV. With these conditions, we study the renormalisation group evolution of the gauge couplings and do a comparative analysis of all possible left-right models where unification can occur. Both the D-parity conserved and broken scenarios as well as the supersymmetric (SUSY) and Non-supersymmetric (Non-SUSY) versions are considered. In addition to the fermion and scalar representations at each stage of the symmetry breaking, contributing to the β-functions, we list the intermediate left-right groups which successfully meet these requirements. We make use of the dimension-5 kinetic mixing effective operators for achieving unification and large intermediate scale. A significant result in the supersymmetric case is that to achieve successful unification for some breaking patterns, the scale of SUSY breaking needs to be at least a few TeV. In some of these cases, intermediate scale can be as low as ∼ 10 12GeV, for SUSY scale to be ∼ 30 TeV. This has important consequences in the collider searches for SUSY particles and phenomenology of the lightest neutralino as dark matter. *

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“…Interestingly, it relates left-right gauge symmetry breaking to a geometrical phase transition in cosmology, i.e., the end of exponential expansion of the Universe. Moreover, as figures 10-11 show, it demands m W R > 10 10 GeV which is the scale suggested by the non-supersymmetric SO(10) GUT model with an intermediate left-right symmetry scale [47][48][49]. ) for different values of ξ that satisfies condition restricted C2 in type-II scenarios with w X = 1.…”

Section: Jhep06(2021)113mentioning

confidence: 90%

Chiral anomaly in SU(2)R-axion inflation and the new prediction for particle cosmology

Maleknejad

2021

J. High Energ. Phys.

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Upon embedding the axion-inflation in the minimal left-right symmetric gauge extension of the SM with gauge group SU(2)L × SU(2)R × U(1)B−L, [1] proposed a new particle physics model for inflation. In this work, we present a more detailed analysis. As a compelling consequence, this setup provides a new mechanism for simultaneous baryogenesis and right-handed neutrino creation by the chiral anomaly of WR in inflation. The lightest right-handed neutrino is the dark matter candidate. This setup has two unknown fundamental scales, i.e., the scale of inflation and left-right symmetry breaking SU(2)R × U(1)B−L→ U(1)Y. Sufficient matter creation demands the left-right symmetry breaking scale happens shortly after the end of inflation. Interestingly, it prefers left-right symmetry breaking scales above 1010 GeV, which is in the range suggested by the non-supersymmetric SO(10) Grand Unified Theory with an intermediate left-right symmetry scale. Although WR gauge field generates equal amounts of right-handed baryons and leptons in inflation, i.e. B − L = 0, in the Standard Model sub-sector B − LSM ≠ 0. A key aspect of this setup is that SU(2)R sphalerons are never in equilibrium, and the primordial B − LSM is conserved by the Standard Model interactions. This setup yields a deep connection between CP violation in physics of inflation and matter creation (visible and dark); hence it can naturally explain the observed coincidences among cosmological parameters, i.e., ηB ≃ 0.3Pζ and ΩDM ≃ 5ΩB. The new mechanism does not rely on the largeness of the unconstrained CP-violating phases in the neutrino sector nor fine-tuned masses for the heaviest right-handed neutrinos. The SU(2)R-axion inflation comes with a cosmological smoking gun; chiral, non-Gaussian, and blue-tilted gravitational wave background, which can be probed by future CMB missions and laser interferometer detectors.

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Surveying the SO(10) model landscape: The left-right symmetric case

Cited by 22 publications

References 104 publications

Multimagnetic monopoles

Multimagnetic monopoles

Roadmap of left-right models based on GUTs

Chiral anomaly in SU(2)R-axion inflation and the new prediction for particle cosmology

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