The GERDA Experiment: Search for the Neutrinoless Double Beta Decay

Miloradovic, Michael; Gerda Collaboration

Contribution to a conference proceedings/Contribution to a book

PUBDB-2016-05610

The GERDA Experiment: Search for the Neutrinoless Double Beta Decay

Miloradovic, M. ; Gerda Collaboration (Collaboration author)

2016
Verlag Deutsches Elektronen-Synchrotron Hamburg
ISBN: 978-3-945931-08-0

Miloradovic, Michael "The GERDA Experiment: Search for the Neutrinoless Double Beta Decay" in Proceedings, Magellan Workshop: Connecting Neutrino Physics and Astronomy / Dahmke, Stefan K.G., Meyer, Mikko, Vanhoefer, Laura (eds.), Deutsches Elektronen-Synchrotron, DESY : 2016 ; Magellan Workshop, 2016-03-17 - 2016-03-18, Hamburg
Magellan Workshop, Hamburg, Germany, 17 Mar 2016 - 18 Mar 2016 Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-PROC 41-46 (2016) [10.3204/DESY-PROC-2016-05/34]

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Abstract: The Germanium Detector Array (Gerda) experiment is searching for the neutrinoless double beta decay of $^{76}$Ge. The observation of this Beyond the Standard Model process would prove the existence of a neutrino Majorana mass component and provide information on the neutrino mass hierarchy and absolute mass scale. {\sc Gerda} operates enriched germanium diodes, acting simultaneously as the source and detector material, directly submerged in liquid argon. Phase I achieved the world's best lower limit of $T^{\,0\nu\beta\beta}_{1/2}>2.1\cdot10^{25}$~yr (90\% C.L.). With the recent completion of the upgrade to Phase II, an additional 20~kg of germanium detectors -- for a total of 35~kg -- and a liquid argon veto system have been implemented. The goal is an order of magnitude lower background with a projected sensitivity of $1.4\cdot10^{26}$~yr for $T^{\,0\nu\beta\beta}_{1/2}$.

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