Testable baryogenesis in seesaw models

Hernández, P.; Kekic, M.; López‐Pavón, Jacobo; Racker, J.; Salvadó, Jordi

doi:10.1007/jhep08(2016)157

Cited by 135 publications

(290 citation statements)

References 41 publications

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“…Such peak searches have been performed and are known to reach deep into the region [33] where leptogenesis is feasible in the νMSM [15,34,35]. An interesting point in this context is the extremely good mass resolution, of order of few MeV, which would allow to test the leptogenesis hypothesis [36] in part of the parameter space [37][38][39] if any HNLs are discovered. The…”

Section: Jhep07(2018)105mentioning

confidence: 99%

“…The smaller mass difference ("solar mass difference") is given by ∆m authors, see e.g. [16,19,20,31,37,38,[63][64][65]. The constraints depend on the number n of heavy neutrinos.…”

Section: Jhep07(2018)105mentioning

confidence: 99%

“…[80,81] and references therein. With the exception of neutrinoless double β decay [20,37,[82][83][84][85][86], the indirect observables are mostly irrelevant in the mass range that can be tested by NA62.…”

Section: Connection To Light Neutrino Oscillation Datamentioning

confidence: 99%

“…For µ, 1, the effective Majorana mass m ββ that governs the rate of the decay in the n = 2 model can be approximated by [20,37,86] …”

Section: Jhep07(2018)105mentioning

confidence: 99%

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NA62 sensitivity to heavy neutral leptons in the low scale seesaw model

Drewes¹,

Hajer²,

Klarić³

et al. 2018

J. High Energ. Phys.

104

129

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The sensitivity of beam dump experiments to heavy neutral leptons depends on the relative strength of their couplings to individual lepton flavours in the Standard Model. We study the impact of present neutrino oscillation data on these couplings in the minimal type I seesaw model and find that it significantly constrains the allowed heavy neutrino flavour mixing patterns. We estimate the effect that the DUNE experiment will have on these predictions. We then discuss implication that this has for the sensitivity of the NA62 experiment when operated in the beam dump mode and provide sensitivity estimates for different benchmark scenarios. We find that the sensitivity can vary by almost two orders of magnitude for general choices of the model parameters, but depends only weakly on the flavour mixing pattern within the parameter range that is preferred by neutrino oscillation data.

show abstract

Section: Jhep07(2018)105mentioning

confidence: 99%

“…The smaller mass difference ("solar mass difference") is given by ∆m authors, see e.g. [16,19,20,31,37,38,[63][64][65]. The constraints depend on the number n of heavy neutrinos.…”

Section: Jhep07(2018)105mentioning

confidence: 99%

Section: Connection To Light Neutrino Oscillation Datamentioning

confidence: 99%

“…For µ, 1, the effective Majorana mass m ββ that governs the rate of the decay in the n = 2 model can be approximated by [20,37,86] …”

Section: Jhep07(2018)105mentioning

confidence: 99%

See 2 more Smart Citations

NA62 sensitivity to heavy neutral leptons in the low scale seesaw model

Drewes¹,

Hajer²,

Klarić³

et al. 2018

J. High Energ. Phys.

104

129

View full text Add to dashboard Cite

show abstract

“…In [11], we pointed out that in the region of large mixings the ratio of mixings to electron and muons of the heavy states are essentially fixed by the PMNS matrix, and is therefore very sensitive to its unknown CP phases. In this paper, our aim is to quantify the CP discovery potential of such measurement.…”

Section: Introductionmentioning

confidence: 99%

The seesaw path to leptonic CP violation

et al. 2017

Self Cite

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Future experiments such as SHiP and highintensity e + e − colliders will have a superb sensitivity to heavy Majorana neutrinos with masses below M Z . We show that the measurement of the mixing to electrons and muons of one such state could establish the existence of CP violating phases in the neutrino mixing matrix, in the context of low-scale seesaw models. We quantify in the minimal model the CP reach of these future experiments, and demonstrate that CP violating phases in the mixing matrix could be established at 5σ CL in a very significant fraction of parameter space.

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Beta and neutrinoless double beta decays with KeV sterile fermions

Abada

Hernández-Cabezudo

Marcano

2019

J. High Energ. Phys.

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Motivated by the capability of the KATRIN experiment to explore the existence of KeV neutrinos in the [1 − 18.5] KeV mass range, we explore the viability of minimal extensions of the Standard Model involving sterile neutrinos (namely the 3 + N frameworks) and study their possible impact in both the beta energy spectrum and the neutrinoless double beta decay effective mass, for the two possible ordering cases for the light neutrino spectrum. We also explore how both observables can discriminate between motivated low-scale seesaw realizations involving KeV sterile neutrinos. Our study concerns the prospect of a Type-I seesaw with two right-handed neutrinos, and a combination of the inverse and the linear seesaws where the Standard Model is minimally extended by two quasi-degenerate sterile fermions. We also discuss the possibility of exploring the latter case searching for doublekinks in KATRIN.

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Testable baryogenesis in seesaw models

Cited by 135 publications

References 41 publications

NA62 sensitivity to heavy neutral leptons in the low scale seesaw model

NA62 sensitivity to heavy neutral leptons in the low scale seesaw model

The seesaw path to leptonic CP violation

Beta and neutrinoless double beta decays with KeV sterile fermions

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