Indirect Signatures of Type I See-Saw Scenarios

TL;DR

This paper explores how low-energy experiments can indirectly detect the presence of low-scale Type I see-saw mechanisms for neutrino mass generation, based on the flavor structure linked to neutrino oscillations.

Contribution

It demonstrates that flavor correlations in weak interactions can serve as indirect signatures of low-scale Type I see-saw models, connecting neutrino oscillation data with new physics.

Findings

Flavor structure is determined by neutrino oscillation parameters.

Correlations among lepton sector phenomena can indicate low-scale see-saw.

Potential for indirect experimental evidence of neutrino mass mechanisms.

Abstract

We consider the low energy constraints that can be applied to type I see-saw extensions of the Standard Model in which the right-handed neutrinos are taken at the electroweak scale. In the reported scenarios, the flavour structure of the charged current and neutral current weak interactions of the Standard Model leptons with the heavy right-handed neutrinos is essentially determined by the neutrino oscillation parameters. In this case, correlations among different measurable phenomena in the lepton sector may provide compelling indirect evidence of low energy see-saw mechanism of neutrino mass generation.