Atmospheric Neutrinos: Status and Prospects

TL;DR

This paper reviews the current state and future prospects of atmospheric neutrino experiments in understanding neutrino oscillations, mass hierarchy, and potential new physics beyond the Standard Model.

Contribution

It provides an overview of current findings, discusses the sensitivity of upcoming experiments, and explores the potential to detect new physics phenomena like sterile neutrinos and non-standard interactions.

Findings

Current data hints at neutrino mass hierarchy but lacks statistical significance.

Next-generation experiments aim to improve sensitivity to neutrino oscillation parameters.

Prospects for discovering new physics such as sterile neutrinos and CPT violation are discussed.

Abstract

We present an overview of the current status of neutrino oscillation studies at atmospheric neutrino experiments. While the current data gives some tentalising hints regarding the neutrino mass hierarchy, octant of $\theta_{23}$ and $\delta_{CP}$, the hints are not statistically significant. We summarise the sensitivity to these sub-dominant three-generation effects from the next-generation proposed atmospheric neutrino experiments. We next present the prospects of new physics searches such as non-standard interactions, sterile neutrinos and CPT violation studies at these experiments.