Anti-Su(5)

Derendinger, Jean-Pierre; Kim, J E; Nanopoulos, Dimitri V.

doi:10.1016/0370-2693(84)91238-3

Cited by 353 publications

(365 citation statements)

References 24 publications

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“…figure 1). At O i , only SUSY is broken, whereas at the other fixed points, O ps , O gg and O fl , also SO(10) is broken to its three GUT subgroups G ps = SU(4) × SU(2) × SU(2) [1], G gg = SU(5) × U(1) X [2] and flipped SU(5) [5,6], G fl = SU(5) × U(1) , respectively. The intersection of all these GUT groups yields the standard model group with an additional U(1) factor, G sm = SU(3) × SU(2) × U(1) Y × U(1) Y , as unbroken gauge symmetry below the compactification scale.…”

Section: D Orbifold Gut Modelmentioning

confidence: 99%

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Flavour Structure and Proton Decay in 6D Orbifold GUTs

Buchmüller

Covi

Emmanuel-Costa³

et al. 2004

J. High Energy Phys.

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We study proton decay in a supersymmetric SO(10) gauge theory in six dimensions compactified on an orbifold. The dimension-5 proton decay operators are forbidden by R-symmetry, whereas the dimension-6 operators are enhanced due to the presence of KK towers. Three sequential quark-lepton families are localised at the three orbifold fixed points, where SO(10) is broken to its three GUT subgroups. The physical quarks and leptons are mixtures of these brane states and additional bulk zero modes. This leads to a characteristic pattern of branching ratios in proton decay, in particular the suppression of the p → µ + K 0 mode.

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Section: D Orbifold Gut Modelmentioning

confidence: 99%

“…The most striking consequence of Grand Unified Theories is proton decay [1]- [6]. It has been predicted and sought for more than 30 years, and its absence constitutes a very strong constraint on any realistic GUT model.…”

Section: Introductionmentioning

confidence: 99%

Flavour Structure and Proton Decay in 6D Orbifold GUTs

Buchmüller

Covi

Emmanuel-Costa³

et al. 2004

J. High Energy Phys.

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“…while the anomalous U(1) factor can be chosen to be 18) and is the only one that decouples from the system by acquiring a mass.…”

Section: Model Imentioning

confidence: 99%

“…This impasse led to the proposal [16] of flipped SU(5) × U(1) [17,18] as a suitable framework for string GUTs, since its symmetry breaking requires only 10 and 10 representations at the GUT scale, as well as 5 and 5 representations at the electroweak scale, and these were readily available in perturbative string constructions. Flipped SU(5) × U(1) has a number of attractive phenomenological features in its own right [16].…”

Section: Introductionmentioning

confidence: 99%

Intersecting branes flip SU(5)

2002

Self Cite

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Within a toroidal orbifold framework, we exhibit intersecting brane-world constructions of flipped SU(5) × U(1) GUT models with various numbers of generations, other chiral matter representations and Higgs representations. We exhibit orientifold constructions with integer winding numbers that yield 8 or more conventional SU(5) generations, and orbifold constructions with fractional winding numbers that yield flipped SU(5) × U(1) models with just 3 conventional generations. Some of these models have candidates for the 5 and 5 Higgs representations needed for electroweak symmetry breaking, but not for the 10 and 10 representations needed for GUT symmetry breaking. We have also derived models with complete GUT and electroweak Higgs sectors, but these have undesirable extra chiral matter.

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“…A non-zero VEV of the 10-dimensional field induces the spontaneous symmetry breaking SU(5) ×U(1) → G SM . The symmetry breaking pattern is similar to the flipped SU(5) models [75][76][77], although there is a difference between the constructions of the U(1) Y hypercharge generator in our model and the flipped SU(5) models.…”

Section: Jhep06(2017)018mentioning

confidence: 53%

The standard model gauge symmetry from higher-rank unified groups in grand gauge-Higgs unification models

Kojima

Takenaga

Yamashitâ

2017

J. High Energ. Phys.

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Abstract:We study grand unified models in the five-dimensional space-time where the extra dimension is compactified on S 1 /Z 2 . The spontaneous breaking of unified gauge symmetries is achieved via vacuum expectation values of the extra-dimensional components of gauge fields. We derive one-loop effective potentials for the zero modes of the gauge fields in SU(7), SU(8), SO(10), and E 6 models. In each model, the rank of the residual gauge symmetry that respects the boundary condition imposed at the orbifold fixed points is higher than that of the standard model. We verify that the residual symmetry is broken to the standard model gauge symmetry at the global minima of the effective potential for certain sets of bulk fermion fields in each model.

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Anti-Su(5)

Cited by 353 publications

References 24 publications

Flavour Structure and Proton Decay in 6D Orbifold GUTs

Flavour Structure and Proton Decay in 6D Orbifold GUTs

Intersecting branes flip SU(5)

The standard model gauge symmetry from higher-rank unified groups in grand gauge-Higgs unification models

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