High Energy Physics - Phenomenology · arXiv:1005.5563 v2 · submitted 30 May 2010
Bridging flavour violation and leptogenesis in SU(3) family models
The paper says
“This in turn implies different consequences for flavour violation couplings and conditions for realizing the right amount of baryon asymmetry through the decay of the lightest right-handed neutrino.”
from the abstract · picked out as the main claim by a classifier
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The paper
Abstract
We reconsider basic, in the sense of minimal field content, Pati-Salam x SU(3) family models which make use of the Type I see-saw mechanism to reproduce the observed mixing and mass spectrum in the neutrino sector. The goal of this is to achieve the observed baryon asymmetry through the thermal decay of the lightest right-handed neutrino and at the same time to be consistent with the expected experimental lepton flavour violation sensitivity. This kind of models have been previously considered but it was not possible to achieve a compatibility among all of the ingredients mentioned above. We describe then how different SU(3) messengers, the heavy fields that decouple and produce the right form of the Yukawa couplings together with the scalars breaking the SU(3) symmetry, can lead to different Yukawa couplings. This in turn implies different consequences for flavour violation couplings and conditions for realizing the right amount of baryon asymmetry through the decay of the lightest right-handed neutrino. Also a highlight of the present work is a new fit of the Yukawa textures traditionally embedded in SU(3) family models.
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abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: asserted 0.89
What the abstract itself states, as probabilities: claims first 0.12 · states limitation 0.17 · human participants 0.01 · controlled comparison 0.04 · randomized assignment 0.01 · states quantitative result 0.05 · compares with prior results 0.86 · mentions code or data availability 0.02
The abstract, sentence by sentence
This table labels the abstract only (arXiv listing abstract v2). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| We reconsider basic, in the sense of minimal field content, Pati-Salam x SU(3) family models which make use of the Type I see-saw mechanism to reproduce the observed mixing and mass spectrum in the neutrino sector. | contribution 0.49 | 0.64 | 0.04 | asserted 0.89 |
| The goal of this is to achieve the observed baryon asymmetry through the thermal decay of the lightest right-handed neutrino and at the same time to be consistent with the expected experimental lepton flavour violation sensitivity. | contribution 0.72 | 0.24 | 0.11 | asserted 0.69 |
| This kind of models have been previously considered but it was not possible to achieve a compatibility among all of the ingredients mentioned above. | gap 0.96 | 0.05 | 0.07 | asserted 1.00 |
| We describe then how different SU(3) messengers, the heavy fields that decouple and produce the right form of the Yukawa couplings together with the scalars breaking the SU(3) symmetry, can lead to different Yukawa couplings. | method 0.62 | 0.70 | 0.08 | asserted 0.56 |
| This in turn implies different consequences for flavour violation couplings and conditions for realizing the right amount of baryon asymmetry through the decay of the lightest right-handed neutrino. | interpretation 0.95 | 0.59 | 0.18 | asserted 0.89 |
| Also a highlight of the present work is a new fit of the Yukawa textures traditionally embedded in SU(3) family models. | contribution 1.00 | 0.92 | 0.11 | asserted 0.99 |
What kind of paper the classifier reports this is: theoretical result 1.00 · evidence from proof or derivation 0.47
What was examined, and what was not
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- arXiv listing abstract v2
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- full text
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- references and citing sentences
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- P abstract
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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,092 input tokens, $0.0002 reported.
Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. This record as JSON
How the literature uses it
3 arXiv papers cite this in 5 sentences
Papers citing it · 3 sentences without a confident label
Uses its data or values 1 paper
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In order to estimate the size of FCNCs in our setup, let us consider a very simple example [We have taken the numerical values of $ϵ_d$ and $ϵ_u$ from the latest fit [ref] of the kind of Yukawa matrices we are using.]:
Supersymmetric Musings on the Predictivity of Family Symmetries · Comparison with Experimental Constraints · 1.00
Cites it as background 1 paper
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The potential of family symmetries to predict the soft supersymmetry breaking parameters in addition to the fermion masses has been studied actively in recent years [ref] .
Supersymmetric Musings on the Predictivity of Family Symmetries · Conclusions · 0.99
What it cites · 50 sentences without a confident label
Builds on 1 paper
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Here we propose a specific messenger sector, which the model of [ref] does not specify, that is compatible with the structure of eq:W_SU3_e and the form of the vacuum expectation values (VEVs) of the flavon fields in eq:vevs1.
SU(3) family symmetry and neutrino bi-tri-maximal mixing · Basic structure · 0.96
Uses the method or tool of 3 papers
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Finally the so-called wash-out function $η$ can be approximated [ref] as η(m) ≈( (8.25×10^-3 /m) + (m/ 0.2×10^-3) )^-1 .
Flavour Matters in Leptogenesis · Constraints from leptogenesis · 0.80
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Doing this numerically involves a good effort but we can take a shortcut by choosing to fit parameters from which we know that the exact details of the supersymmetric spectra are not that relevant, just as it was done in [ref] .
Precision test of a Fermion mass texture · Quark sector · 0.96
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Once the messenger fields are integrated out (by solving the supersymmetric equations of motion, $∂_X W=0$, $∂_X̅ W=0$ [ref] ), we get the following effective superpotential:
Globally and locally supersymmetric effective theories for light fields · Basic structure · 0.88
Uses data or values from 2 papers
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We can see that the moderate $tanβ$ regime is practically not constrained by the current experimental limit $BR(μ→eγ)< 1.2 ×10^-11$, while the final sensitivity ($≃10^-13$) of the MEG experiment [ref] will be able to test a large portion of the parameter space.
A limit for the mu -> e gamma decay from the MEG experiment · Constraints from LFV decays · 0.81
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If the right-handed neutrinos had decoupled above or at the GUT scale, the present experimental bound, $BR(μ→eγ)< 1.2 ×10^-11$ [ref] , could have been easily satisfied.
New Limit for the Family-Number Non-conserving Decay mu+ to e+_gamma · Constraints from LFV decays · 1.00
Compares with 2 papers
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While the structure of the right-handed messengers after the breaking of the PS group is similar to that one studied in other $SU(3)$ family models [ref] - [ref] , the structure of the messengers for the right-handed neutrinos is different, essentially because we were interested in raising the scale of the lightest right-handed neutrino to achieve the observed value of baryon asymmetry through its decay.
FCNC and CP Violation Observables in a SU(3)-flavoured MSSM · Conclusions · 0.98
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While the structure of the right-handed messengers after the breaking of the PS group is similar to that one studied in other $SU(3)$ family models [ref] - [ref] , the structure of the messengers for the right-handed neutrinos is different, essentially because we were interested in raising the scale of the lightest right-handed neutrino to achieve the observed value of baryon asymmetry through its decay.
Fermion Masses and Mixing Angles from SU(3) Family Symmetry and Unification · Conclusions · 0.98
Cites as background 2 papers
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The form of the Yukawa couplings in eq:yuk_o_text have been traditionally explained in the context of models with a $SU(3)$ family symmetry [ref] - [ref] .
FCNC and CP Violation Observables in a SU(3)-flavoured MSSM · Basic structure · 0.89
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The form of the Yukawa couplings in eq:yuk_o_text have been traditionally explained in the context of models with a $SU(3)$ family symmetry [ref] - [ref] .
Fermion Masses and Mixing Angles from SU(3) Family Symmetry and Unification · Basic structure · 0.89
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