Low Energy Signatures of the TeV Scale See-Saw Mechanism

Abstract

We study a type I see-saw scenario where the right-handed (RH) neutrinos, responsible for the light neutrino mass generation, lie at the electroweak scale. Under certain conditions, the strength of the charged and neutral current weak interactions of the Standard Model particles with the heavy RH neutrinos can be large enough to allow their production at the LHC, opening also the possibility of observing other low energy signatures of the new physics in the electroweak precision observables as well as in searches for rare leptonic decays or neutrinoless double beta decay. We argue that in this scenario the flavour structure of the neutrino Yukawa couplings is essentially determined by the low energy neutrino parameters, leading to fairly strong correlations among the new phenomena. In particular, we show that the present bound on the $\mu \to e+\gamma$ decay rate makes very difficult the observation of the heavy RH neutrinos at the LHC or the observation of deviations from the Standard Model predictions in the electroweak precision data. We also argue that all present experimental constraints on this scenario still allow i) for an enhancement of the rate of neutrinoless double beta decay, which thus can be in the range of sensitivity of the GERDA experiment even when the light Majorana neutrinos possess a normal hierarchical mass spectrum, and ii) for the predicted $\mu \to e+\gamma$ decay rate to be within the sensitivity range of the MEG experiment.

Published version: 19 pages, 6 figures; references added; results unchanged

References in corpus (11)

• Right-Handed Neutrinos at LHC and the Mechanism of Neutrino Mass Generation
• Distinguishing seesaw models at LHC with multi-lepton signals
• Unitarity of the Leptonic Mixing Matrix
• Effects of new leptons in Electroweak Precision Data
• Non-Standard Neutrino Interactions with Matter from Physics Beyond the Standard Model
• Minimal Flavour Seesaw Models
• Signatures for Majorana neutrinos at hadron colliders
• Heavy neutrino signals at large hadron colliders
• Electroweak scale seesaw and heavy Dirac neutrino signals at LHC
• Majorana Neutrinos, Neutrino Mass Spectrum and the |<m>| ~ 0.001 eV Frontier in Neutrinoless Double Beta Decay
• The Interplay Between the "Low" and "High" Energy CP-Violation in Leptogenesis

Cited by in corpus (34)

• Looking forward to Lepton-flavor-violating ALPs
• Predicting the Values of the Leptonic CP Violation Phases
• Exploring New Physics with O(keV) Electron Recoils in Direct Detection Experiments
• FIMP realization of the scotogenic model
• Probing leptogenesis with GeV-scale sterile neutrinos at LHCb and BELLE II
• The minimal seesaw and leptogenesis models
• Lepton-flavor violating axions at MEG II
• Bounds on the triplet fermions in type-III seesaw and implications for collider searches
• Left-right models with light neutrino mass prediction and dominant neutrinoless double beta decay rate
• Inverse seesaw in $A_5^{\prime }$ modular symmetry
• Bounds on right-handed neutrino parameters from observable leptogenesis
• Introduction to Charged Lepton Flavour Violation
• Triplet Scalar Dark Matter and Leptogenesis in an Inverse See-Saw Model of Neutrino Mass Generation
• Perspectives for tests of neutrino mass generation at the GeV scale: Experimental reach versus theoretical predictions
• New Weinberg operator for neutrino mass and its seesaw origin
• Low energy phenomena of the lepton sector in an $A_4$ symmetry model with heavy inverse seesaw neutrinos
• Higgs sector in NMSSM with right-handed neutrinos and spontaneous R-parity violation
• Tests of Low-Scale Leptogenesis in Charged Lepton Flavour Violation Experiments
• Neutrinoless double beta decay in the minimal type-I seesaw model: How the enhancement or cancellation happens?
• Search for a light $Z^{\prime }$ at LHC in a neutrinophilic $U(1)$ model
• Neutrino masses and mixing in Minimal Inverse Seesaw using $A_4$ modular symmetry
• Modelling Heavy Neutral Leptons in Accelerator Beamlines
• Probing the Nature of Heavy Neutral Leptons in Direct Searches and Neutrinoless Double Beta Decay
• Probing a new decay of vector-like top partner mediated by heavy Majorana neutrino via single production
• Muon $g-2$ anomaly in a left-right model with an inverse seesaw mechanism
• Lepton flavor violation beyond the MSSM
• Higgs flavor phenomenology in a supersymmetric left-right model with parity
• Modular-symmetry-protected seesaw
• Generalised Casas-Ibarra Parametrisation for Majorana Neutrino Masses
• Renormalization group running triggered tri-resonant leptogenesis within neutrino flavor-symmetry models
• Low-scale minimal linear seesaw model for neutrino mass and flavor mixing
• Type I Seesaw Mechanism, Lepton Flavour Violation and Higgs Decays
• Revisiting lepton flavor violation: $\tau$ and meson decays
• How many new particles do we need after the Higgs boson?