An SO(10) supersymmetric grand unified theory

Clark, T. E.; Kuo, T. K.; Nakagawa, N.

doi:10.1016/0370-2693(82)90507-x

Cited by 167 publications

(181 citation statements)

References 13 publications

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“…There are several SO(10) models, in both renormalizable [25][26][27][28][29][30][31][32][33][34][35][36][37][38] and nonrenormalizable [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55] versions (see [56,57] for reviews), where new ingredients are added either to reduce the number of free parameters or to reduce their relevant range. In the first case the predictability of the model is increased, while in the second case the model becomes more natural.…”

Section: Jhep09(2014)095mentioning

confidence: 99%

Order and anarchy hand in hand in 5D SO(10)

Feruglio

Patel

Vicino

2014

J. High Energ. Phys.

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We update a five-dimensional SO(10) grand unified model of fermion masses and mixing angles originally proposed by Kitano and Li. In our setup Yukawa couplings are anarchical and quark and lepton sectors are diversified by the profiles of the fermion zero modes in the extra dimension. The breaking of SO(10) down to SU(5)×U(1) X provides the key parameter that distinguishes the profiles of the different SU(5) components inside the same 16 representation. With respect to the original version of the model, we extend the Higgs sector to explicitly solve the doublet-triplet splitting problem through the missing partner mechanism and we perform a fit to an idealized set of data. By scanning the Yukawa couplings of the model we find that, for large tan β, both normal and inverted ordered neutrino spectrum can be accommodated. However, while the case of inverted order requires a severe fine tuning of the Yukawa parameters, the normal ordering is compatible with an anarchical distribution of Yukawa couplings. Thus, in a natural portion of the parameter space, the model predicts a normal ordered neutrino spectrum, the lightest neutrino mass below 5 meV, and |m ββ | in the range 0.1-5 meV. No particular preference is found for the Dirac CP phase in the lepton sector while the right-handed neutrino masses are too small to explain the baryon asymmetry of the universe through thermal leptogenesis.

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Section: Jhep09(2014)095mentioning

confidence: 99%

Order and anarchy hand in hand in 5D SO(10)

Feruglio

Patel

Vicino

2014

J. High Energ. Phys.

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“…The model has no more parameters than the Minimal Supersymmetric Standard Model (MSSM) with massive neutrinos and exact R-parity. In the minimal renormalizable setting the model contains three generations of 16 F matter supermultiplets and the following Higgs chiral supermultiplets [4,5]: 10 H , 126 H , 126 H , and 210 H . The 10 H and 126 H representations couple to the matter bilinear 16 F i 16 F j = (10 S + 120 A + 126 S ) ij in the superpotential leading to the minimal set of Yukawa couplings needed for a realistic fermion mass spectrum [6] (S, A denote the symmetry property in the generation indices i, j).…”

Section: Introductionmentioning

confidence: 99%

CPviolation in a minimal renormalizable supersymmetricSO(10)model and beyond

Bertolini

Malinský

2005

Phys. Rev. D

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We investigate the role of CP phases within the renormalizable SUSY SO(10) GUT with one 10H , one 126H one 126H and one 210H Higgs representations and type II seesaw dominating the neutrino mass matrix. This framework is non trivially predictive in the fermionic sector and connects in a natural way the GUT unification of b and τ Yukawa couplings with the bi-large mixing scenario for neutrinos. On the other hand, existing numerical analysis claim that consistency with quark and charged lepton data prevents the minimal setup from reproducing the observed CP violation via the Cabibbo-Kobayashi-Maskawa (CKM) matrix. We re-examine the issue and find by inspection of the fermion mass sum rules and a detailed numerical scan that, even though the CKM phase preferentially takes values in the second quadrant, the agreement of the minimal model with the data is actually obtained in a non negligible fraction of the parameter space. We then consider a recently proposed renormalizable extension of the minimal model, obtained by adding one chiral 120-dimensional Higgs supermultiplet. We show that within such a setup the CKM phase falls naturally in the observed range. We emphazise the robust predictivity of both models here considered for neutrino parameters that are in the reach of ongoing and future experiments.

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“…Together with one real gauge coupling we have thus a total of 33 real parameters. This is 7 more than in the minimal SO(10) [13][14][15], but still 16 less than even in the simplified truncated version of E 6 in [11].…”

Section: Discussionmentioning

confidence: 88%

“…In minimal SO(10) [13][14][15] this scale poses a serious problem and eventually rules out the low-energy…”

Section: Jhep05(2015)108mentioning

confidence: 99%

A minimal supersymmetric E6 unified theory

Babu

Bajc

Susic

2015

J. High Energ. Phys.

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We show explicitly that supersymmetric E 6 Grand Unified Theory with a Higgs sector consisting of {27 + 27 + 351 ′ + 351 ′ + 78} fields provides a realistic scenario for symmetry breaking and fermion mass generation. While gauge symmetry breaking can be achieved without the 78 field, its presence is critical for a successful doublet-triplet mass splitting. The Yukawa sector of the model consists of only two symmetric matrices describing all of quark, lepton and neutrino masses and mixings. The fermion mass matrices are computed at low energy and a fit to the second and third generation masses and mixings is performed. We find a good numerical fit to the low-energy data. Thus, this model, having 11 superpotential parameters, alongside the two symmetric Yukawa matrices, seems to be the best realistic candidate for a minimal renormalizable supersymmetric E 6 unified theory.

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An SO(10) supersymmetric grand unified theory

Cited by 167 publications

References 13 publications

Order and anarchy hand in hand in 5D SO(10)

Order and anarchy hand in hand in 5D SO(10)

CPviolation in a minimal renormalizable supersymmetricSO(10)model and beyond

A minimal supersymmetric E6 unified theory

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