# Leptogenesis in an SU(5)×A5 golden ratio flavour model

@article{Gehrlein2015LeptogenesisIA, title={Leptogenesis in an SU(5)×A5 golden ratio flavour model}, author={Julia Gehrlein and Serguey T. Petcov and Martin Spinrath and Xinyi Zhang}, journal={Nuclear Physics}, year={2015}, volume={896}, pages={311-329} }

In this paper we discuss a minor modification of a previous SU(5) × A5 flavour model which exhibits at leading order golden ratio mixing and sum rules for the heavy and the light neutrino masses. Although this model could predict all mixing angles well it fails in generating a sufficient large baryon asymmetry via the leptogenesis mechanism. We repair this deficit here, discuss model building aspects and give analytical estimates for the generated baryon asymmetry before we perform a numerical…

## Figures and Tables from this paper

## 18 Citations

Addendum to “Leptogenesis in an SU(5)×A5 golden ratio flavour model” [Nucl. Phys. B 896 (2015) 311–329]

- Physics
- 2015

We derive and discuss the solution of the Boltzmann equations for leptogenesis in a phenomenologically viable SU(5) × A5 golden ratio flavour model proposed in [1,2]. The model employs, in…

Constraining A4 leptonic flavour model parameters at colliders and beyond

- PhysicsJournal of High Energy Physics
- 2019

A bstractThe observed pattern of mixing in the neutrino sector may be explained by the presence of a non-Abelian, discrete flavour symmetry broken into residual subgroups at low energies. Many…

On the Predictivity of Neutrino Mass Sum Rules

- Physics
- 2016

Correlations between light neutrino observables are arguably the strongest predictions of lepton flavour models based on (discrete) symmetries, except for the very few cases which unambiguously…

Unified models of neutrinos, flavour and CP Violation

- Physics
- 2017

Abstract Recent data from neutrino experiments gives intriguing hints about the mass ordering, the C P violating phase and non-maximal atmospheric mixing. There seems to be a (one sigma) preference…

Renormalisation group corrections to neutrino mass sum rules

- Physics
- 2015

A bstractNeutrino mass sum rules are an important class of predictions in flavour models relating the Majorana phases to the neutrino masses. This leads, for instance, to enormous restrictions on the…

Renormalisation group corrections to neutrino mixing sum rules

- Physics
- 2015

A bstractNeutrino mixing sum rules are common to a large class of models based on the (discrete) symmetry approach to lepton flavour. In this approach the neutrino mixing matrix U is assumed to have…

Generating lepton masses and mixings with a heavy vector doublet

- PhysicsJournal of Physics G: Nuclear and Particle Physics
- 2019

We construct a viable extension of the SM with a heavy vector in the fundamental $SU\left( 2\right) _{L}$ representation and nine SM singlet scalar fields, consistent with the current SM fermion mass…

Peccei-Quinn symmetry for Dirac seesaw and leptogenesis

- Physics
- 2016

We extend the DFSZ invisible axion model to simultaneously explain small Dirac neutrino masses and cosmic matter-antimatter asymmetry. After the Peccei-Quinn and electroweak symmetry breaking, the…

CP Violation in the Lepton Sector and Implications for Leptogenesis

- Physics
- 2017

We review the current status of the data on neutrino masses and lepton mixing and the prospects for measuring the CP-violating phases in the lepton sector. The possible connection between low energy…

Leptogenesis, radiative neutrino masses and inert Higgs triplet dark matter

- Physics
- 2016

We extend the standard model by three types of inert elds including Majorana fermion singlets/triplets, real Higgs singlets/triplets and leptonic Higgs doublets. In the presence of a softly broken…

## References

SHOWING 1-10 OF 52 REFERENCES

An SU(5)×A5 golden ratio flavour model

- Physics
- 2014

Abstract In this paper we study an SU ( 5 ) × A 5 flavour model which exhibits a neutrino mass sum rule and golden ratio mixing in the neutrino sector which is corrected from the charged lepton…

Majorana Phases and Leptogenesis in See-Saw Models with A 4 Symmetry

- Physics
- 2009

The related issues of Majorana CP violation in the lepton sector and lepto- genesis are investigated in detail in two rather generic supersymmetric models with type I see-saw mechanism of neutrino…

Predicting the values of the leptonic CP violation phases in theories with discrete flavour symmetries

- Physics
- 2015

Using the fact that the neutrino mixing matrix U=Ue†Uν, where Ue and Uν result from the diagonalisation of the charged lepton and neutrino mass matrices, we consider a number of forms of Uν…

Leptogenesis and Low Energy CP Violation in Neutrino Physics

- Physics
- 2007

Abstract Taking into account the recent progress in the understanding of the lepton flavor effects in leptogenesis, we investigate in detail the possibility that the CP-violation necessary for the…

A new bridge between leptonic CP violation and leptogenesis

- Physics
- 2007

Abstract Flavour effects due to lepton interactions in the early Universe may have played an important role in the generation of the cosmological baryon asymmetry through leptogenesis. If the only…

Updated fit to three neutrino mixing: status of leptonic CP violation

- Physics
- 2014

A bstractWe present a global analysis of solar, atmospheric, reactor and accelerator neutrino data in the framework of three-neutrino oscillations based on data available in summer 2014. We provide…

A Golden $A_5$ Model of Leptons with a Minimal NLO Correction

- Physics
- 2013

Abstract We propose a new A 5 model of leptons which corrects the LO predictions of Golden Ratio mixing via a minimal NLO Majorana mass correction which completely breaks the original Klein symmetry…

Determining the Dirac CP Violation Phase in the Neutrino Mixing Matrix from Sum Rules

- Physics
- 2015

Abstract Using the fact that the neutrino mixing matrix U = U e † U ν , where U e and U ν result from the diagonalisation of the charged lepton and neutrino mass matrices, we analyse the sum rules…

Search for Majorana neutrinos with the first two years of EXO-200 data

- Medicine, PhysicsNature
- 2014

New results from EXO-200 based on a large 136Xe exposure are reported, finding no statistically significant evidence for 0νββ decay and set a half-life limit of 1.1 × 1025 years at the 90 per cent confidence level.

Sizeable θ13 from the charged lepton sector in SU(5), (tri-)bimaximal neutrino mixing and Dirac CP violation

- Physics
- 2011

The recent results from T2K and MINOS experiments point towards a relatively large value of the reactor angle θ13 in the lepton sector. In this paper we show how a large θ13 can arise from the…