Final Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of ⁷⁶Ge to Excited States of ⁷⁶Se
read the original abstract
$^{76}$Ge can $\beta\beta$ decay into three possible excited states of $^{76}$Se, with the emission of two or, if the neutrino is Majorana, zero neutrinos. None of these six transitions have yet been observed. The MAJORANA DEMONSTRATOR was designed to study $\beta\beta$ decay of $^{76}$Ge using a low background array of high purity germanium detectors. With 98.2 kg-y of isotopic exposure, the DEMONSTRATOR sets the strongest half-life limits to date for all six transition modes. For $2\nu\beta\beta$ to the $0^+_1$ state of $^{76}$Se, this search has begun to probe for the first time half-life values predicted using modern many-body nuclear theory techniques, setting a limit of $T_{1/2}>1.5\times10^{24}$ y (90% CL).
This paper has not been read by Pith yet.
Forward citations
Cited by 2 Pith papers
-
Two-neutrino $\beta\beta$ decay to excited states at next-to-leading order
Shell model calculations find NLO contributions to 2νββ half-lives to excited states typically below 5% but larger when leading-order terms cancel, yielding half-life predictions slightly above the 76Ge limit and cons...
-
Sensitivity of neutrinoless double beta decays from a combined analysis of ground and excited states
Combined analysis of 0νββ decays to ground and excited states can significantly enhance experimental sensitivity depending on NME predictions.
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.