Non-oscillation probes of neutrino masses

TL;DR

This paper reviews laboratory methods for measuring neutrino masses, focusing on neutrinoless double beta decay and direct searches, which are crucial for understanding cosmology and particle physics.

Contribution

It highlights the current experimental efforts and sensitivities in laboratory neutrino mass measurements, complementing cosmological observations.

Findings

Experiments aim for sensitivities around 100 meV.

Laboratory methods provide independent neutrino mass constraints.

Neutrinoless double beta decay and direct searches are key approaches.

Abstract

The absolute scale of neutrino masses is very important for understanding the evolution and the structure formation of the universe as well as for nuclear and particle physics beyond the present Standard Model. Complementary to deducing statements on the neutrino mass from cosmological observations two different methods to determine the neutrino mass scale in the laboratory are pursued: the search for neutrinoless double beta decay and the direct neutrino mass search. For both methods currently experiments with a sensitivity of order 100 meV are being set up or commissioned.