Conveners
Neutrino #7
- Itaru Shimizu (Tohoku University)
259.
Experimental studies of axial-vector weak couplings for double beta decays and astro neutrinos.
Prof.
Hiroyasu Ejiri
(RCNP Osaka University)
9/10/19, 2:00 PM
Neutrinos
Oral presentation in parallel session
Nuclear matrix elements (NMEs) and the axial-vector weak coupling $g_A$ are crucial for double beta decays(DBDs) and astro neutrino studies, but theoretical calculations for them are hard. We report experimental studies for them by using charge exchange ($^3$He,t) reactions and muon capture reactions.
We show for the first time that single-beta NMEs and the coupling $g_A$ are quenched...
Mr
Michael Jewell
(Stanford University)
9/10/19, 2:20 PM
Neutrinos
Oral presentation in parallel session
The EXO-200 Collaboration has been searching for neutrinoless double beta decay ($0\nu\beta\beta$) using a liquid xenon time projection chamber filled with ~150kg of enriched Xe$^{136}$. EXO-200 began data taking in September 2011 and has now completed operations as of December 2018. The inclusion of advanced analysis techniques that maximize the topological discrimination between...
Christoph Wiesinger
(Technische Universität München)
9/10/19, 2:40 PM
Neutrinos
Oral presentation in parallel session
Excellent spectroscopic performance, event topology information and outstanding radiopurity are unique properties of High Purity Germanium (HPGe) detectors that facilitate the search for neutrinoless double beta (0$\nu\beta\beta$) decay of $^{76}$Ge.
A detection of this process would shed light onto physics beyond the standard model as it would reveal the Majorana nature of neutrinos.
The...
Prof.
Matthew Green
(North Carolina State University & Oak Ridge National Laboratory)
9/10/19, 3:00 PM
Neutrinos
Oral presentation in parallel session
The Majorana Demonstrator neutrinoless double-beta decay experiment comprises modular germanium detector arrays comprising 44.8 kg of germanium, 29.7 kg of which have been fabricated from germanium enriched to 88% in germanium-76 with the aims of probing neutrinoless double-beta decay, searching for new physics beyond the standard model, and demonstrating backgrounds sufficiently low to...
