TY - JOUR
T1 - Results of a search for neutrinoless double- β decay using the COBRA demonstrator
AU - The COBRA Collaboration
AU - Ebert, Joachim
AU - Gehre, Daniel
AU - Gößling, Claus
AU - Hagner, Caren
AU - Heidrich, Nadine
AU - Klingenberg, Reiner
AU - Kröninger, Kevin
AU - Nitsch, Christian
AU - Oldorf, Christian
AU - Fritts, Matthew
AU - Rajek, Silke
AU - Rebber, Henning
AU - Rohatsch, Katja
AU - Tebrügge, Jan
AU - Temminghoff, Robert
AU - Theinert, Robert
AU - Timm, Jan
AU - Wonsak, Björn
AU - Zatschler, Stefan
AU - Zuber, Kai
N1 - Publisher Copyright:
© 2016 American Physical Society.
PY - 2016/8/2
Y1 - 2016/8/2
N2 - Neutrinoless double-β decay (0νββ decay) is a hypothetical process that can occur if the neutrino is its own antiparticle. The COBRA Collaboration operates a demonstrator to search for these decays at the Laboratori Nazionali del Gran Sasso in Italy using CdZnTe semiconductor detectors. The exposure of 234.7 kg d considered in this analysis was collected between September 2011 and February 2015. The analysis focuses on the decay of the nuclides Cd114,Te128,Zn70,Te130, and Cd116. A Bayesian analysis is performed to estimate the signal strength of 0νββ decay. No signal is observed for any of these nuclides. Therefore, the following half-life limits at 90% credibility are set: T1/20ν>1.6×1021yr (Cd114),T1/20ν>1.9×1021yr (Te128),T1/20ν>6.8×1018yr (Zn70),T1/20ν>6.1×1021yr (Te130), and T1/20ν>1.1×1021yr (Cd116).
AB - Neutrinoless double-β decay (0νββ decay) is a hypothetical process that can occur if the neutrino is its own antiparticle. The COBRA Collaboration operates a demonstrator to search for these decays at the Laboratori Nazionali del Gran Sasso in Italy using CdZnTe semiconductor detectors. The exposure of 234.7 kg d considered in this analysis was collected between September 2011 and February 2015. The analysis focuses on the decay of the nuclides Cd114,Te128,Zn70,Te130, and Cd116. A Bayesian analysis is performed to estimate the signal strength of 0νββ decay. No signal is observed for any of these nuclides. Therefore, the following half-life limits at 90% credibility are set: T1/20ν>1.6×1021yr (Cd114),T1/20ν>1.9×1021yr (Te128),T1/20ν>6.8×1018yr (Zn70),T1/20ν>6.1×1021yr (Te130), and T1/20ν>1.1×1021yr (Cd116).
UR - https://www.scopus.com/pages/publications/84982702328
UR - https://www.scopus.com/pages/publications/84982702328#tab=citedBy
U2 - 10.1103/PhysRevC.94.024603
DO - 10.1103/PhysRevC.94.024603
M3 - Article
AN - SCOPUS:84982702328
SN - 2469-9985
VL - 94
JO - Physical Review C
JF - Physical Review C
IS - 2
M1 - 024603
ER -