Effective Majorana neutrino decay

Duarte, Lucía; Romero, Ismael; Peressutti, Javier; Sampayo, O. A.

doi:10.1140/epjc/s10052-016-4301-8

Cited by 36 publications

(75 citation statements)

References 84 publications

(103 reference statements)

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“…The coupling constants α N W correspond respectively to the operators in (4). The total decay width of the N (Γ N ) is calculated in [61], and the complete dimension 6 effective Lagrangian is presented in an appendix in that work. in recasts of LHC searches for the same-sign dilepton signal [62].…”

Section: A Effective Modelmentioning

confidence: 99%

Not-that-heavy Majorana neutrino signals at the LHC

Duarte

Peressutti

Sampayo

2017

J. Phys. G: Nucl. Part. Phys.

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We revisit the possibility of Majorana neutrinos production at the Large Hadron Collider (LHC) by studying the pp → l the angle between the final leptons, using a forward-backward like asymmetry to study the effects of the different gauge invariant operators. We also study the pp → l + i νγ process, which is dominant for low m N masses if tensorial one-loop generated new physics leading to a magnetic moment for the heavy neutrinos is present. This channel provides a powerful signal that could be observed at the LHC with the aid of non-pointing photons observables and cuts on the displacement between the prompt lepton and the photon in the final state.

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Section: A Effective Modelmentioning

confidence: 99%

Not-that-heavy Majorana neutrino signals at the LHC

Duarte

Peressutti

Sampayo

2017

J. Phys. G: Nucl. Part. Phys.

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“…1 (see also Ref. [14]), for the masses of N considered (tens of MeVs), the dominant decay channel is N → γν. This channel decay was calculated in Ref.…”

Section: Photon Flux By Heavy Neutrino Decay In the Atmospherementioning

confidence: 94%

“…The Majorana neutrino effective phenomenology regarding the relevant Ndecay modes and interactions is treated in Refs. [13,14].…”

Section: Introductionmentioning

confidence: 99%

Photons coming from an opaque obstacle as a manifestation of heavy neutrino decays

2018

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Within the framework of physics beyond the standard model, we study the possibility that mesons produced in the atmosphere by the cosmic-ray flux decay to heavy Majorana neutrinos and the latter, in turn, decay mostly to photons in the low-mass region. We study the photon flux produced by sterile Majorana neutrinos (N) decaying after passing through a massive and opaque object such as a mountain. To model the production of N 's in the atmosphere and their decay to photons, we consider the interaction between the Majorana neutrinos and the standard matter as modeled by an effective theory. We then calculate the heavy neutrino flux originated by the decay of mesons in the atmosphere. The surviving photon flux, originated by N decays, is calculated using transport equations that include the effects of Majorana neutrino production and decay.

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“…The complete lagrangian for the effective model is presented in an appendix in our recent work [32].…”

Section: Effective Operators and Lagrangianmentioning

confidence: 99%

“…The effects of dark matter and new physics on ν τ propagation has been studied by our group in Refs. [28][29][30], and the Majorana neutrino effective phenomenology regarding the relevant N decay modes and interactions is treated in [31,32].…”

Section: Introductionmentioning

confidence: 99%

Effects of Majorana physics on the UHE $$\nu _{\tau }$$ ν τ flux traversing the Earth

et al. 2017

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We study the effects produced by sterile Majorana neutrinos on the ν τ flux traversing the Earth, considering the interaction between the Majorana neutrinos and the standard matter as modeled by an effective theory. The surviving tau-neutrino flux is calculated using transport equations including Majorana neutrino production and decay. We compare our results with the pure Standard Model interactions, computing the surviving flux for different values of the effective lagrangian couplings, considering the detected flux by IceCube for an operation time of 10 years, and Majorana neutrinos with mass m N ∼ m τ .

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Effective Majorana neutrino decay

Cited by 36 publications

References 84 publications

Not-that-heavy Majorana neutrino signals at the LHC

Not-that-heavy Majorana neutrino signals at the LHC

Photons coming from an opaque obstacle as a manifestation of heavy neutrino decays

Effects of Majorana physics on the UHE $$\nu _{\tau }$$ ν τ flux traversing the Earth

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