Predictions from a flavour GUT model combined with a SUSY breaking sector

Antusch, Stefan; Hohl, C.

doi:10.1007/jhep10(2017)155

Cited by 10 publications

(7 citation statements)

References 57 publications

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“…For each model we assume a particular texture of Yukawa matrices, to be specified later, and single operator dominance in each Yukawa entry, i.e. only a single GUT operator is present or dominates every Yukawa entry (see [22][23][24][25][26] for concrete realizations in the literature). This imposes strict relations between different fermion sectors and increases model predictivity.…”

Section: General Setup In Flavor Susy Gutsmentioning

confidence: 99%

Employing nucleon decay as a fingerprint of SUSY GUT models using SusyTCProton

Antusch

Hohl

Susic

2021

J. High Energ. Phys.

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While the observation of nucleon decay would be a smoking gun of Grand Unified Theories (GUTs) in general, the ratios between the decay rates of the various channels carry rich information about the specific GUT model realization. To investigate this fingerprint of GUT models in the context of supersymmetric (SUSY) GUTs, we present the software tool SusyTCProton, which is an extension of the module SusyTC to be used with the REAP package. It allows to calculate nucleon decay rates from the relevant dimension five GUT operators specified at the GUT scale, including the full loop-dressing at the SUSY scale. As an application, we investigate the fingerprints of two example GUT toy models with different flavor structures, performing an MCMC analysis to include the experimental uncertainties for the charged fermion masses and CKM mixing parameters. While both toy models provide equally good fits to the low energy data, we show how they could be distinguished via their predictions of ratios for nucleon decay rates. Together with SusyTCProton we also make the additional module ProtonDecay public. It can be used independently from REAP and allows to calculate nucleon decay rates from given D = 5 and D = 6 operator coefficients (accepting the required SUSY input for the D = 5 case in SLHA format). The D = 6 functionality can also be used to calculate nucleon decay in non-SUSY GUTs.

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Section: General Setup In Flavor Susy Gutsmentioning

confidence: 99%

Employing nucleon decay as a fingerprint of SUSY GUT models using SusyTCProton

Antusch

Hohl

Susic

2021

J. High Energ. Phys.

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“…Examples for models realizing single operator dominance this way can e.g. be found in [14][15][16][17][18]. In the following we will further assume that the applied family symmetry also makes sure that 45 H only couples to the 22 entry of Y 5 .…”

Section: A Minimal Non-susy Su(5) Gut Scenario With Predicted Yukawa ...mentioning

confidence: 99%

“…They have been discussed in the context of SUSY GUTs in [14,31]. We assume for both models single operator dominance in each entry [14][15][16][17][18], including now also the first family of quarks and leptons. For the neutrino sector in model 1 and model 2 we choose the CSD2 [40,41] and CSD3 [42] texture, respectively.…”

Section: Formulation Of the "Toy Models"mentioning

confidence: 99%

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Nucleon decay in a minimal non-SUSY GUT with predicted quark-lepton Yukawa ratios

Antusch,

Hinze

2021

Preprint

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We investigate the predictions for various nucleon decay rates and their ratios in nonsupersymmetric SU(5) Grand Unified Theories (GUTs) where the masses of the third and second family down-type quarks and charged leptons each stem dominantly from single GUT operators. Extending the Georgi-Glashow SU(5) model by a 45-dimensional GUT-Higgs representation, the gauge couplings can meet at the high scale M GUT and the GUT scale predictions y τ /y b = 3/2 and y µ /y s = 9/2 can emerge within single operator dominance. Explaining the observed neutrino masses via the type I seesaw mechanism by adding SU(5) singlet fermion representations and taking their renormalization group effects into account, we show that these predictions can lead to viable low scale second and third family downtype quark and charged lepton masses. To investigate nucleon decay predictions, we extend the minimal scenario to two "toy models" towards explaining quark and lepton masses and mixings with different flavor structure, and perform Markov Chain Monte Carlo (MCMC) analyses confronting the models with the available experimental data. We show that if several nucleon decay channels are observed, the ratios between their partial decay rates can serve as "fingerprints", allowing to separate between GUT models with different flavor structure.

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“…As it is mentioned that the above framework is considered at the GUT scale M GU T , we run the neutrino mass matrix m ν following a top-down approach [32][33][34][35][36][37][38][39][40][41] upto the level of M z scale. The analysis involves the heavy right-handed neutrino singlets and we see that the Renormalization Group Equations (RGE) for running the m ν in the interval of different thresholds are different [42][43][44][45][46][47][48]. At each threshold, the heavy right handed neutrinos has to be integrated out(These analysis involve rigorous mathematics and for necessary details see Ref.…”

Section: Modified Bilarge Ansatzmentioning

confidence: 99%

Revamped Bi-Large neutrino mixing with Gatto-Sartori-Tonin like relation

Roy,

Singh,

Borah

2020

Preprint

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The Gatto Sartori Tonin (GST) relation which establishes the Cabibbo angle in terms of the quark mass ratio: θ C = m d /m s , is instituted as θ 13 = m 1 /m 3 to a Bi-large motivated lepton mixing framework that relies on the unification of mixing parameters: θ 13 = θ C and θ 12 = θ 23 . This modification in addition to ruling out the possibility of vanishing θ 13 , advocates for a nonzero lowest neutrino mass and underlines the normal ordering of the neutrino masses. The framework is further enhanced by the inclusion of a charged lepton diagonalizing matrix U lL with (θ l 12 ∼ θ C , δ = 0). The model being architected at the Grand unification theory (GUT) scale is further run down upto the Z boson scale to understand the universality of the GST relation and the Cabibbo angle.

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Predictions from a flavour GUT model combined with a SUSY breaking sector

Cited by 10 publications

References 57 publications

Employing nucleon decay as a fingerprint of SUSY GUT models using SusyTCProton

Employing nucleon decay as a fingerprint of SUSY GUT models using SusyTCProton

Nucleon decay in a minimal non-SUSY GUT with predicted quark-lepton Yukawa ratios

Revamped Bi-Large neutrino mixing with Gatto-Sartori-Tonin like relation

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