Simple SO(10) GUT in five dimensions

Fukuyama, Takeshi; Okada, Nobuchika

doi:10.1103/physrevd.78.015005

Cited by 11 publications

(46 citation statements)

References 64 publications

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“…That is, we will discuss SO(10) orbifold GUT proposed by Ref. [34]. From the view of string theory, we should consider ten dimensional world.…”

Section: Model Setup Of So(10) Gut In 5dmentioning

confidence: 99%

“…In Ref. [34], assuming M c = v PS and imposing the left-right symmetry, the gauge coupling unification was examined. Analyzing the gauge coupling running in the MSSM, M c = v PS is fixed as the scale where the SU(2) L and SU(2) R gauge couplings coincide with each other, which is found to be M c = v PS = 1.2 × 10…”

Section: Matter Multipletsmentioning

confidence: 99%

“…Interestingly, except for the singlet field, the orbifold GUT model of Ref. [34], which we are interested in, has the same particle content. Therefore, the GUT model can naturally incorporate hybrid inflation and is constrained from the inflation model.…”

Section: Introductionmentioning

confidence: 99%

“…In Chapter 3 we consider an SO(10) model in 5D and will explain how this model rescues the problems of minimal SO(10) GUT in 4D. In section 3.2, we explain the setup of our model, [34], where all matters and Higgs multiplets reside only on a Pati-Salam brane (PS brane) where the PS gauge symmetry is manifest, so that a low energy effective description of this model is nothing but the PS model in 4D with a special set of matter and Higgs multiplets. At energies higher than the compactification scale, the Kaluza-Klein (KK) modes of the bulk SO(10) gauge multiplet are involved in the particle content.…”

Section: Introductionmentioning

confidence: 99%

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So(10) Gut in Four and Five Dimensions: A Review

Fukuyama

2013

Int. J. Mod. Phys. A

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We review SO(10) grand unified theories (GUTs) in four and five dimensions (4D and 5D). The renormalizable minimal SO(10) SUSY GUT is the central theme of this review. It is very predictive and makes it possible to construct all mass matrices including those of the Dirac and heavy right-handed Majorana neutrinos. So it is not only able to reproduce all the low energy data, except for too larger θ 13 in the lepton mixing angles (which can be evaded without spoiling the basic ingredients), but also predicts almost all new physics beyond the standard model (SM) like neutrinoless double beta decay, the electric and magnetic dipole moments of the quark-lepton, lepton flavour violation, leptogenesis etc. To be very predictive, on the other hand, implies that predictions are unambiguous and they are always exposed to severe compatibilities with observations as well as to a conceptual consistency check. The explicit construction of the Higgs superpotential and the explicit display of a symmetry breaking pattern from GUT to the SM show that the naive desert from the SM to GUT in the minimal supersymmetric standard model (MSSM) is a too simplified concept and we have many definitely determined intermediate energy scales in general. This situation destroys the naive gauge coupling unification in the MSSM scheme. Also the precise measurements of neutrino oscillation data have revealed several small but manifest mismatches with our predictions. Also there are arguments that it is impossible to construct a GUT theory in 4D with a finite number of multiplets that leads to the MSSM with a residual R symmetry. Of course, there are several loopholes which solve these problems in 4D. However, if we try to solve all these pathologies comprehensively, it is very attractive for us to go into extra dimensions. Extra dimension may be either warped or flat. The fifth dimension, for simplicity, is compactified on the S 1 /(Z 2 ) (warped) or on the S 1 /(Z 2 × Z ′ 2 ) (flat) orbifold with two inequivalent branes at the orbifold fixed points. In the former warped case, intermediate energy scales are translated with the positions of Higgs fields in the bulk and the fundamental scheme of the MSSM is recovered. On the other hand, in the latter flat scenario, all matter and Higgs multiplets reside on the Pati-Salam (PS) brane where the PS symmetry is manifest. There the original renormalizablity in Yukawa coupling is broken but its essential structures of mass matrices in minimal SO(10) GUT in 4D is promoted to the PS invariant action in 4D. In the gaugino mediation mechanism, the SO(10) gauge multiplet is transmitted to the PS brane through the gaugino mediation with bulk gauge multiplet. Further breaking of the PS gauge group to the SM group is realized by VEVs of the Higgs multiplets (4, 1, 2) ⊕ (4, 1, 2). We show that this model not only cures all pathologies in SO(10) GUT in 4D but also provides the consistent inflation scenario and dark matter candidate and leptogenesis. The gauge coupling unification is successfully realized at ...

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“…That is, we will discuss SO(10) orbifold GUT proposed by Ref. [34]. From the view of string theory, we should consider ten dimensional world.…”

Section: Model Setup Of So(10) Gut In 5dmentioning

confidence: 99%

Section: Matter Multipletsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

So(10) Gut in Four and Five Dimensions: A Review

Fukuyama

2013

Int. J. Mod. Phys. A

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“…[59] contains a review on light steriles and a detailed analysis of the bounds on KK neutrinos in ADD models appeared in [60]. A recent work has studied a viable realization of the MEG signal in a SUSY model [61] and other related recent works include [62][63][64][65][66][67].…”

Section: Jhep07(2011)103mentioning

confidence: 99%

Neutrino mass and μ → e + γ from a mini-seesaw

Duerr

George

McDonald

2011

J. High Energ. Phys.

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Abstract:The recently proposed "mini-seesaw mechanism" combines naturally suppressed Dirac and Majorana masses to achieve light Standard Model neutrinos via a lowscale seesaw. A key feature of this approach is the presence of multiple light (order GeV) sterile-neutrinos that mix with the Standard Model. In this work we study the bounds on these light sterile-neutrinos from processes like µ → e+ γ, invisible Z-decays, and neutrinoless double beta-decay. We show that viable parameter space exists and that, interestingly, key observables can lie just below current experimental sensitivities. In particular, a motivated region of parameter space predicts a µ → e + γ branching fraction within the range to be probed by MEG.

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Non-thermal leptogenesis in a simple 5D SO(10) GUT

Fukuyama

Okada

2010

J. Cosmol. Astropart. Phys.

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We discuss the non-thermal leptogenesis in the scheme of 5D orbifold SO(10) GUT with the smooth hybrid inflation. With an unambiguously determined Dirac Yukawa couplings and an assumption for the neutrino mixing matrix of the tri-bimaximal from, we analyze baryon asymmetry of the universe via non-thermal leptogenesis in two typical cases for the light neutrino mass spectrum, the normal and inverted hierarchical cases. The resultant baryon asymmetry is obtained as a function of the lightest mass eigenvalue of the light neutrinos, and we find that a suitable amount of baryon asymmetry of the universe can be produced in the normal hierarchical case, while in the inverted hierarchical case the baryon asymmetry is too small to be consistent with the observation.

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Simple SO(10) GUT in five dimensions

Cited by 11 publications

References 64 publications

So(10) Gut in Four and Five Dimensions: A Review

So(10) Gut in Four and Five Dimensions: A Review

Neutrino mass and μ → e + γ from a mini-seesaw

Non-thermal leptogenesis in a simple 5D SO(10) GUT

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