How the Inverse See-Saw Mechanism Can Reveal Itself Natural, Canonical and Independent of the Right-Handed Neutrino Mass

Abstract

The common lore in the literature of neutrino mass generation is that the canonical see-saw mechanism beautifully offers an explanation for the tiny neutrino mass but at the cost of introducing right-handed neutrinos at a scale that is out of range for the current experiments. The inverse see-saw mechanism is an interesting alternative to the canonical one once it leads to tiny neutrino masses with the advantage of being testable at TeV scale. However, this last mechanism suffers from an issue of naturalness concerning the scale responsible for such small masses, namely, the parameter $\mu$ that is related to lepton number violation and is supposed to be at the keV scale, much lower than the electroweak one. However, no theoretical framework was built that offers an explanation for obtaining this specific scale. In this work we propose a variation of the inverse see-saw mechanism by assuming a minimal scalar and fermionic set of singlet fields, along with a $Z_5\otimes Z_2$ symmetry, that allows a dynamical explanation for the smallness of $\mu$, recovering the neat canonical see-saw formula and with right-handed (RH) neutrinos free to be at the electroweak scale, thus testable at LHC and current neutrino experiments.

10 pages, stability of the potential verified, accepted for publication in Physical review D

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• Triple seesaw mechanism

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• Jet substructure shedding light on heavy Majorana neutrinos at the LHC
• $R_{D^{(\ast )}}$, $R_{K^{(\ast )}}$ and neutrino mass in the 2HDM-III with right-handed neutrinos
• Inverse seesaw in $A_5^{\prime }$ modular symmetry
• Higgs Vacuum Stability in $B-L$ extended Standard Model
• Neutrino phenomenology and scalar Dark Matter with $A_4$ flavor symmetry in Inverse and type II seesaw
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• Implementing the inverse type-II seesaw mechanism into the 3-3-1 model
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• Two radiative inverse seesaw models, dark matter, and baryogenesis
• Type III seesaw under $A_4$ modular symmetry with leptogenesis
• Testing left-right symmetry with an inverse seesaw mechanism at the LHC
• Neutrino Anarchy and Renormalization Group Evolution
• Inverse type II seesaw mechanism and its signature at the LHC and ILC
• Deep learnig analysis of the inverse seesaw in a 3-3-1 model at the LHC
• Axion Like Particles and the Inverse Seesaw Mechanism
• Inverse Seesaw, dark matter and the Hubble tension
• Impact of texture zeros on dark matter and neutrinoless double beta decay in inverse seesaw
• Stellar energy loss rates in the pair-annihilation process beyond the standard model
• Confronting the inverse seesaw mechanism with the recent muon g-2 result