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… 

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

SHOWING 1-10 OF 52 REFERENCES
An SU(5)×A5 golden ratio flavour model
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
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
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
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
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
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
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
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
TLDR
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
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
...
1
2
3
4
5
...