# Tensor and scalar interactions of neutrinos may lead to observable neutrino magnetic moments

## TL;DR

This paper demonstrates that tensor and scalar neutrino interactions can induce significantly larger neutrino magnetic moments at one-loop level than vector interactions, impacting experimental searches.

## Contribution

It reveals that tensor and scalar neutrino interactions can generate large neutrino magnetic moments, highlighting their importance in neutrino physics experiments.

## Key findings

- TSIs induce neutrino magnetic moments 10^7 to 10^10 times larger than vector interactions.
- Large neutrino magnetic moments from TSIs may reach or surpass experimental bounds.
- Potential interplay between probing TSIs and searching for neutrino magnetic moments.

## Abstract

Recently more generalized four-fermion interactions of neutrinos such as tensor and scalar interactions (TSIs) have been extensively studied in response to forthcoming precision measurements of neutrino interactions. In this letter, we show that due to the chirality-flipping nature, at the 1-loop level TSIs typically generate much larger ($10^{7}\sim10^{10}$) neutrino magnetic moments ($\nu$MMs) than the vector case. For some cases, the large $\nu$MMs generated by TSIs may reach or exceed the known bounds, which implies potentially important interplay between probing TSIs and searching for $\nu$MMs in current and future neutrino experiments.