%0 Conference Paper
%A von Sturm, Katharina
%T The 0νββ Experiment GERDA Latest Phase I Results and Phase II Upgrade
%N DESY-PROC-2016-03
%C Hamburg
%I Verlag Deutsches Elektronen-Synchrotron
%M PUBDB-2017-12160
%M DESY-PROC-2016-03
%@ 978-3-945931-06-6
%B DESY-PROC
%P 137-140
%D 2017
%< Sturm, Katharina von "The $0\nu\beta\beta$ Experiment GERDA Latest Phase I Results and Phase II Upgrade" in 12th "Patras" Workshop on Axions, WIMPs and WISPs, PATRAS 2016 / Kim, Younglm, Lindner, Axel, Semertzidis, Yannis K. (eds.), Verlag Deutsches Elektronen-Synchrotron : 2017 ; PATRAS 2016 : 12th "Patras" Workshop on Axions, WIMPs and WISPs, 2016-06-20 - 2016-06-24, Jeju Island
%X  G<span style="font-size:x-small">ERDA published the best limit on <sup>76</sup>Ge 0νββ decay's half-life of T<sub>1/2</sub><sup>0ν</sup> > 2.1·10<sup>25</sup>yr (90%C.L.) in 2013. Subsequently, exotic decay modes with Majoron emission were investigated obtaining half-life limits  ∼ 10<sup>23</sup>yr for spectral indices n=1,2,3,7. The half-life measurement of 2νββ from <sup>76</sup>Ge to <sup>76</sup>Se g.s. was reevaluated with an uncertainty  < 5% and decay modes to three <sup>76</sup>Se excited states were analyzed. The lower limits found,  ∼ 10<sup>23</sup> yr, rule out a number of nuclear structure model predictions. In a recent major upgrade, amongst other, the detector mass was almost doubled and a new veto system, exploiting liquid argon scintillation light, was installed.
%B 12th Patras Workshop on Axions, WIMPs and WISPs
%C 20 Jun 2016 - 24 Jun 2016, Jeju Island (South Korea)
Y2 20 Jun 2016 - 24 Jun 2016
M2 Jeju Island, South Korea
%F PUB:(DE-HGF)29 ; PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
%9 ReportContribution to a conference proceedingsContribution to a book
%R 10.3204/DESY-PROC-2009-03/VonSturm_Katharina
%U https://bib-pubdb1.desy.de/record/395495