High-energy constraints from low-energy neutrino non-standard interactions

TL;DR

This paper derives high-energy constraints on new physics models from low-energy neutrino non-standard interaction bounds, showing these interactions push new physics scales beyond TeV energies, though other experiments often provide tighter bounds.

Contribution

It provides a model-independent analysis linking low-energy neutrino interaction bounds to high-energy new physics constraints, including one-loop effects and a systematic approach.

Findings

Neutrino non-standard interactions push new physics scale beyond TeV.

Low-energy bounds are generally more stringent than high-energy constraints.

First systematic analysis connecting low-energy neutrino interactions to high-energy physics.

Abstract

Many scenarios of new physics predict the existence of neutrino Non-Standard Interactions, new vector contact interactions between neutrinos and first generation fermions beyond the Standard Model. We obtain model-independent constraints on the Standard Model Effective Field Theory at high energies from bounds on neutrino non-standard interactions derived at low energies. Our analysis explores a large set of new physics scenarios and includes full one-loop running effects below and above the electroweak scale. Our results show that neutrino non-standard interactions already push the scale of new physics beyond the TeV. We also conclude that bounds derived by other experimental probes, in particular by low-energy precision measurements and by charged lepton flavor violation searches, are generally more stringent. Our study constitutes a first step towards the systematization of phenomenological analyses to evaluate the impact of neutrino Non-Standard Interactions for new physics scenarios at high energies.