Results from the NEMO 3 experiment

TL;DR

The NEMO 3 experiment searches for neutrinoless double beta decay and measures two-neutrino double beta decay, setting limits on neutrino properties and testing alternative physics models through data collected since 2003.

Contribution

This paper presents the latest experimental results from NEMO 3, including new limits on neutrinoless double beta decay and precise measurements of two-neutrino double beta decay for multiple isotopes.

Findings

No evidence for neutrinoless double beta decay of Mo100 and Se82.

Established 90% C.L. lower limits on half-lives for these isotopes.

Performed precise measurements of two-neutrino double beta decay for seven isotopes.

Abstract

The aim of the NEMO 3 experiment is the search for neutrinoless double beta decay and precise measurement of two-neutrino double beta decay of several isotopes. The experiment has been taking data since 2003. Since no evidence for neutrinoless double beta decay of Mo100 and Se82 has been found, a 90% C.L. lower limit on the half-life of this process and corresponding upper limit on the effective Majorana neutrino mass are derived. The data are also interpreted in terms of alternative models, such as weak right-handed currents or Majoron emission. In addition, NEMO 3 has performed precision measurements of the two-neutrino double beta decay for seven different isotopes. The most recent experimental results of NEMO 3 are presented in this paper.