A supersymmetric SU(4)XO(4) model

Antoniadis, Ignatios; Leontaris, G.K.

doi:10.1016/0370-2693(89)91125-8

Cited by 144 publications

(230 citation statements)

References 14 publications

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“…We employ the 4D superfield notation after appropriate rescaling from 5D fields. [39]. In fact, these VEVs break SU(4) c × SU(2) R to SU(3) c × U(1) Y , where SU(3) c is a subgroup of SU (4) c , while U(1) Y is a superposition of two U(1) factors coming from SU(4) c and SU (2) …”

Section: D Susymentioning

confidence: 99%

Neutrino democracy and other phenomenology from 5D SO(10)

Shafi

Tavartkiladze

2003

Nuclear Physics B

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We present a five dimensional supersymmetric SO(10) model compactified on an orbifoldR , realized on one of the fixed points (branes), is spontaneously broken to the MSSM via the higgs mechanism. Employing a flavor U (1) symmetry and suitably extending the 'matter' sector enables us to understand large mixings in the neutrino sector via a democratic approach, versus the small CKM mixings. A residual R-symmetry on G 422 brane helps eliminate the troublesome dimension five nucleon decay, while the U (1) symmetry plays an essential role in suppressing dimension six decay. For rare leptonic decays we expect

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Section: D Susymentioning

confidence: 99%

Neutrino democracy and other phenomenology from 5D SO(10)

Shafi

Tavartkiladze

2003

Nuclear Physics B

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“…The values of these couplings play an important role in the final value of the proton decay rate and the resulting hierarchy of existing modes. Nevertheless, Superstring embeddable models [7] or models of phenomenologically oriented GUTs that treat the fermion mass problem [8], come out with an extended Higgs sector. Similarly, several attempts for the construction of phenomenologically viable string models have yielded up to now models with extra Higgses [9].…”

Section: Introductionmentioning

confidence: 99%

Suppressing dimension five operators in generalSU(5)models

1998

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We discuss dimension-5 operators in supersymmetric models containing extra hypercharge-1/3 colour-triplets. We derive a general formula relating dimension-5 operator to the colourtriplet mass matrix. We show that certain zeros in the triplet mass-matrix together with some triplet coupling selection rules can lead to elimination of dimension-5 operators. In particular we focus on SU(5) models and show that (a) Dimension-5 operators can be eliminated in the standard SU(5) model by the introduction of an extra pair of 5 + 5 Higgses with specific couplings (b) Flipped SU(5) models with extra 10 + 10 Higgses are free of dimension-5 operators (c) Flipped SU(5) models with extra 5 + 5 and/or extra 10 + 10 Higgses can be made free of dimension-5 operators for a textured form of the triplet mass-matrix accompanied by constraints on the 5-plet couplings to matter. Our analysis is motivated by the recently put forward M-theory phenomenological framework that requires a strong string coupling and reintroduces the problem of eliminating dimension-5 operators.

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“…It has been realised for some time that the Pati-Salam gauge symmetry may be broken at the scale M ∼ M GU T by the following Higgs representations which arise naturally in the superstring construction [3],…”

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confidence: 99%

“…Here we consider a scenario in which the superpotential in the visible sector respects the U(1) R symmetry, while the hidden sector also respects the R-symmetry, but spontaneously breaks it leading to an R-violating V sof t . 4 As discussed in [3] the high energy Higgs mechanism removes the H,H components u c H , e c H ,ū c H ,ē c H from the physical spectrum (half of these states get eaten by the heavy gauge bosons and gauginos and the other half will become massive Higgs bosons),…”

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confidence: 99%

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Minimal supersymmetric SU(4)×SU(2)L×SU(2)R

King

Shafi

1998

Physics Letters B

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We present a minimal string-inspired supersymmetric SU(4) × SU(2) L × SU(2) R model, and provide a detailed analysis of the symmetry breaking potential in this model, based on a generalisation of that recently proposed by Dvali, Lazarides and Shafi. The model contains a global U(1) R-symmetry and reduces to the MSSM at low energies. However it improves on the MSSM since it explains the magnitude of its µ term and gives a prediction for tan β ≃ m t /m b . It also predicts an essentially stable proton, and contains both 'cold' and 'hot' dark matter candidates. A period of hybrid inflation above the symmetry breaking scale is also possible in this model.Finally it suggests the existence of 'heavy' charge ±e/6 (colored) and ±e/2 (color singlet) states.

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A supersymmetric SU(4)XO(4) model

Cited by 144 publications

References 14 publications

Neutrino democracy and other phenomenology from 5D SO(10)

Neutrino democracy and other phenomenology from 5D SO(10)

Suppressing dimension five operators in generalSU(5)models

Minimal supersymmetric SU(4)×SU(2)L×SU(2)R

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