Global constraints on neutral-current generalized neutrino interactions

TL;DR

This paper performs a comprehensive global analysis to constrain various types of generalized neutrino interactions (GNI), including scalar, pseudoscalar, and tensor couplings, using multiple neutrino processes and effective field theory.

Contribution

It provides the first global constraints on GNI parameters across several neutrino processes, improving existing bounds and offering robust limits on new physics couplings.

Findings

Robust bounds on scalar, pseudoscalar, and tensor GNI parameters.

Improved constraints compared to previous individual analyses.

Global analysis enhances the reliability of the limits.

Abstract

We study generalized neutrino interactions (GNI) for several neutrino processes, including neutrinos from electron-positron collisions, neutrino-electron scattering, and neutrino deep inelastic scattering. We constrain scalar, pseudoscalar, and tensor new physics effective couplings, based on the standard model effective field theory at low energies. We have performed a global analysis for the different effective couplings. We also present the different individual constraints for each effective parameter (scalar, pseudoscalar, and tensor). Being a global analysis, we show robust results for the restrictions on the different GNI parameters and improve some of these bounds.