# Atmospheric neutrinos and new physics

## TL;DR

This paper reviews recent searches for new physics using atmospheric neutrino data from IceCube, focusing on sterile neutrinos and non-standard interactions, and discusses the theoretical background of NSI.

## Contribution

It provides an overview of recent experimental searches for sterile neutrinos and NSI in atmospheric neutrinos, along with a review of NSI theory and phenomenology.

## Key findings

- Constraints on sterile neutrino parameters from IceCube data
- Limits on non-standard interactions in the mu_-_ sector
- Summary of the current theoretical understanding of NSI

## Abstract

We discuss recent searches for new physics using high-energy atmospheric neutrino data from IceCube, namely sterile neutrinos with masses in the range $\Delta m^2 = 0.01$ eV$^2$ - 10 eV$^2$, and non-standard interactions (NSI) in the $\nu_\mu - \nu_\tau$ sector. We also present a brief review of the current status of NSI theory and phenomenology.