TY  - CONF
AU  - von Sturm, Katharina
TI  - The 0νββ Experiment GERDA Latest Phase I Results and Phase II Upgrade
IS  - DESY-PROC-2016-03
CY  - Hamburg
PB  - Verlag Deutsches Elektronen-Synchrotron
M1  - PUBDB-2017-12160
M1  - DESY-PROC-2016-03
SN  - 978-3-945931-06-6
T2  - DESY-PROC
SP  - 137-140
PY  - 2017
AB  -  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.
T2  - 12th Patras Workshop on Axions, WIMPs and WISPs
CY  - 20 Jun 2016 - 24 Jun 2016, Jeju Island (South Korea)
Y2  - 20 Jun 2016 - 24 Jun 2016
M2  - Jeju Island, South Korea
LB  - PUB:(DE-HGF)29 ; PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
DO  - DOI:10.3204/DESY-PROC-2009-03/VonSturm_Katharina
UR  - https://bib-pubdb1.desy.de/record/395495
ER  -