The vacuum of the minimal nonsupersymmetric<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>S</mml:mi><mml:mi>O</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>10</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math>unification

Bertolini, Stefano; Luzio, Luca Di; Malinský, Michal

doi:10.1103/physrevd.81.035015

Cited by 86 publications

(116 citation statements)

References 56 publications

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“…Nevertheless, in principle leptogenesis could still proceed at a scale M 2,3 ≪ Λ R thanks to the asymmetries generated in the decays of the two quasi degenerate states N 2,3 . Eventually however, we will find that in Case 2 on the one hand leptogenesis is unable to produce a sufficient baryon asymmetry, and on the other hand for the heaviest RH neutrino we always obtain M 3 > ∼ 10 14 GeV which, under the requirement of perturbative Yukawa couplings, is in conflict with SO(10) gauge coupling unification which instead suggests an intermediate vevs scale of order 10 11 GeV [34] (see however [35] for viable scenarios with an intermediate scale as high as 10 14 GeV).…”

Section: Casementioning

confidence: 71%

Squeezing out predictions with leptogenesis from SO(10)

et al. 2012

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We consider the see-saw mechanism within a non-supersymmetric SO(10) model. By assuming the SO(10) quark-lepton symmetry, and after imposing suitable conditions that ensure that the right-handed (RH) neutrino masses are at most mildly hierarchical (compact RH spectrum) we obtain a surprisingly predictive scenario. The absolute neutrino mass scale, the Dirac and the two Majorana phases of the neutrino mixing matrix remain determined in terms of the set of already measured low energy observables, modulo a discrete ambiguity in the signs of two neutrino mixing angles and of the Dirac phase. The RH neutrinos mass spectrum is also predicted, as well as the size and sign of the leptogenesis CP asymmetries. We compute the cosmological baryon asymmetry generated through leptogenesis and obtain the correct sign, and a size compatible with observations.

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Section: Casementioning

confidence: 71%

Squeezing out predictions with leptogenesis from SO(10)

et al. 2012

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“…Second, anomaly cancellation in the SM can be understood naturally since SO (10) is free from anomalies. Third, gauge coupling unification can be realized without relying on supersymmetry, if there are intermediate-scale gauge symmetries [8][9][10][11][12][13][14]. Majorana mass terms of right-handed neutrinos can be generated at an intermediate scale, which may explain the smallness of neutrino masses.…”

Section: Introductionmentioning

confidence: 99%

The ATLAS diboson resonance in non-supersymmetric SO(10)

Evans

Olive

Zheng

2016

J. High Energ. Phys.

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SO(10) grand unification accommodates intermediate gauge symmetries with which gauge coupling unification can be realized without supersymmetry. In this paper, we discuss the possibility that a new massive gauge boson associated with an intermediate gauge symmetry explains the excess observed in the diboson resonance search recently reported by the ATLAS experiment. The model we find has two intermediate symmetries,where the latter gauge group is broken at the TeV scale. This model achieves gauge coupling unification with a unification scale sufficiently high to avoid proton decay. In addition, this model provides a good dark matter candidates, whose stability is guaranteed by a Z 2 symmetry present after the spontaneous breaking of the intermediate gauge symmetries. We also discuss prospects for testing these models in the forthcoming LHC experiments and dark matter detection experiments.

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“…It should be emphasized that the color-octet scalars are well motivated in many basic theories, such as various SUSY constructions [30], topcolor models [31] and the models with extra dimensions [32]. Meanwhile, their phenomenology has been studied comprehensively.…”

Section: Introductionmentioning

confidence: 99%

The SM extension with color-octet scalars: diphoton enhancement and global fit of LHC Higgs data

Cao

Wan

Yang

et al. 2013

J. High Energ. Phys.

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In light of the significant progress of the LHC to determine the properties of the Higgs boson, we investigate the capability of the Manohar-Wise model in explaining the Higgs data. This model extends the SM by one family of color-octet and isospin-doublet scalars, and it can sizably alter the coupling strengths of the Higgs boson with gluons and photons. We first examine the current constraints on the model, which are from unitarity, the LHC searches for the scalars and the electroweak precision data (EWPD). In implementing the unitarity constraint, we use the properties of the SU(3) group to simplify the calculation. Then in the allowed parameter space we perform a fit of the model, using the latest ATLAS and CMS data, respectively. We find that the Manohar-Wise model is able to explain the data with χ 2 significantly smaller than the SM value. We also find that the current Higgs data, especially the ATLAS data, are very powerful in further constraining the parameter space of the model. In particular, in order to explain the γγ enhancement reported by the ATLAS collaboration, the sign of the hgg coupling is usually opposite to that in the SM.

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The vacuum of the minimal nonsupersymmetricSO(10)unification

Cited by 86 publications

References 56 publications

Squeezing out predictions with leptogenesis from SO(10)

Squeezing out predictions with leptogenesis from SO(10)

The ATLAS diboson resonance in non-supersymmetric SO(10)

The SM extension with color-octet scalars: diphoton enhancement and global fit of LHC Higgs data

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