Neutrino mass experiments: current and future

TL;DR

This paper reviews the current state and future prospects of neutrino mass experiments, discussing theoretical foundations, key experimental approaches, current limits, and future challenges in determining the absolute neutrino mass scale.

Contribution

It provides a comprehensive overview of the theoretical basis and experimental techniques for measuring neutrino mass, highlighting recent limits and future challenges.

Findings

Current best upper limits on neutrino mass

Complementarity of different measurement approaches

Identification of key challenges ahead

Abstract

Nearly 70 years since the neutrino was discovered, and 25 years since discovery of neutrino oscillations established its non-zero mass, the absolute neutrino-mass scale remains unknown. Due to its unique characteristics, determining this neutrino property requires new measurement techniques to be developed. Currently, there are four measurement approaches: using cosmological models, inference from time-of-arrival from supernovae, through observation of neutrinoless double beta decay, and the kinematics of weak decay processes. I will review the theoretical basis underlying neutrino mass measurement and present key experiments in this field. I will highlight the current best upper limits, how neutrino mass experiments are complementary to other neutrino property searches, and summarize the challenges that lie ahead of the neutrino mass community.