Short Baseline Neutrino Oscillation Experiments

TL;DR

This paper reviews short baseline neutrino oscillation experiments that suggest the existence of sterile neutrinos around 1 eV, highlighting the experimental anomalies and the lack of a comprehensive theoretical model.

Contribution

It categorizes different classes of short baseline neutrino experiments and discusses their objectives in the context of sterile neutrino research.

Findings

Multiple experiments report anomalies indicating sterile neutrinos.

No current theoretical model fully explains the sterile neutrino signals.

Confirmation of 1 eV sterile neutrinos remains experimentally challenging.

Abstract

Series of short baseline neutrino oscillation experiments provided unexpected results, and now they are called short baseline anomalies, and all indicates an existence of sterile neutrinos with a mass scale around 1~eV. The signals of short baseline anomalies are reported from 4 different classes of experiments. However, at this moment, there is no convincing theoretical model to explain such sterile neutrinos, and a single experiment to confirm 1~eV sterile neutrinos may be challenging. In this short note, we describe classes of short baseline neutrino oscillation experiments and their goals.