Examining leptogenesis with lepton flavor violation and the dark matter abundance

Blanchet, Steve; Marfatia, Danny; Mustafayev, Azar

doi:10.1007/jhep11(2010)038

Cited by 10 publications

(15 citation statements)

References 83 publications

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“…Thus they open a new region in low energy neutrino parameter space though currently disfavoured by the cosmological observations. We have not found electron-dominated solutions as in the supersymmetric framework [32,54].…”

Section: Jhep10(2017)029mentioning

confidence: 99%

A full analytic solution of SO(10)-inspired leptogenesis

Bari

Fiorentin

2017

J. High Energ. Phys.

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Recent encouraging experimental results on neutrino mixing parameters prompt further investigation on SO(10)-inspired leptogenesis and on the associated strong thermal solution that has correctly predicted a non-vanishing reactor mixing angle, it further predicts sin δ 0, now supported by recent results at ∼ 95% C.L., normally ordered neutrino masses and atmospheric mixing angle in the first octant, best fit results in latest global analyses. Extending a recent analytical procedure, we account for the mismatch between the Yukawa basis and the weak basis, that in SO(10)-inspired models is described by a CKM-like unitary transformation V L , obtaining a full analytical solution that provides useful insight and reproduces accurately all numerical results, paving the way for future inclusion of different sources of theoretical uncertainties and for a statistical analysis of the constraints. We show how muon-dominated solutions appear for large values of the lightest neutrino mass in the range (0.01-1) eV but also how they necessarily require a mild fine tuning in the seesaw relation. For the dominant (and untuned) tauon-dominated solutions we show analytically how, turning on V L V CKM , some of the constraints on the low energy neutrino parameters get significantly relaxed. In particular we show how the upper bound on the atmospheric neutrino mixing angle in the strong thermal solution gets relaxed from θ 23 41 • to θ 23 44 • , an important effect in the light of the most recent NOνA, T2K and IceCube results.

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Section: Jhep10(2017)029mentioning

confidence: 99%

A full analytic solution of SO(10)-inspired leptogenesis

Bari

Fiorentin

2017

J. High Energ. Phys.

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“…This scenario has been analyzed in detail in the context of pure type-I S O(10) inspired models [130,[132][133][134]. This problem can be cured in various ways, in particular if one has also a type-II contribution dominating the neutrino masses [150], or in the N 2 -leptogenesis framework mentioned above, invoking flavor effects [135][136][137]. For a related model based on E 6 grand unification, see [151,152].…”

Section: Implications For Left-right Symmetric and S O(10) Modelsmentioning

confidence: 99%

Leptogenesis: beyond the minimal type I seesaw scenario

Hambye

2012

New J. Phys.

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Recent evidence for neutrino masses has established the leptogenesis mechanism as a very natural possible explanation for the baryon asymmetry of the Universe. The explicit realization of this mechanism depends on the neutrino mass model considered. If the right-handed type-I seesaw model of neutrino masses is certainly the most straightforward, it is not the only natural one, especially in the framework of explicit GUT realizations of the seesaw. In this paper, we review in detail the various seesaw scenarios that can implement the leptogenesis mechanism successfully, beyond the paradigm of the pure standard type-I seesaw model. This includes scenarios based on the existence of scalar triplets (type-II), of fermion triplets (type-III) as well as mixed seesaw frameworks.

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“…A supersymmetric version of this scenario including the renormalization group evolution of all the relevant couplings was also studied in [113], and including a type II contribution to the seesaw mechanism from a triplet Higgs in left-right symmetric models in [114].…”

Section: So(10)-inspired Modelsmentioning

confidence: 99%

The minimal scenario of leptogenesis

Blanchet

Bari

2012

New J. Phys.

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We review the main features and results of thermal leptogenesis within the type I seesaw mechanism, the minimal extension of the Standard Model explaining neutrino masses and mixing. After presenting the simplest approach, the vanilla scenario, we discuss various important developments of recent years, such as the inclusion of lepton and heavy neutrino flavour effects, a description beyond a hierarchical heavy neutrino mass spectrum and an improved kinetic description within the density matrix and the closed-timepath formalisms. We also discuss how leptogenesis can ultimately represent an important phenomenological tool to test the seesaw mechanism and the underlying model of new physics.

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Examining leptogenesis with lepton flavor violation and the dark matter abundance

Cited by 10 publications

References 83 publications

A full analytic solution of SO(10)-inspired leptogenesis

A full analytic solution of SO(10)-inspired leptogenesis

Leptogenesis: beyond the minimal type I seesaw scenario

The minimal scenario of leptogenesis

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