Sterile neutrinos?

TL;DR

This paper discusses the concept of sterile neutrinos, explores models involving their mixing with other neutrinos, and reviews methods to detect their potential transitions from solar neutrinos.

Contribution

It provides a concise overview of sterile neutrino theories, mixing schemes, and introduces model-independent detection methods.

Findings

Sterile neutrinos are a theoretical extension of neutrino models.

Several mixing schemes imply the existence of sterile neutrinos.

Methods to detect sterile neutrino transitions are presented.

Abstract

The notion of sterile neutrinos is discussed. The schemes of mixing of four massive neutrinos, which imply the existence of sterile neutrinos, are briefly considered. Several model independent methods that allow to reveal possible transitions of solar neutrinos into sterile states are presented.