PoS - Proceedings of Science
Volume 283 - Neutrino Oscillation Workshop (NOW2016) - Session IV: Neutrino masses, states, interactions
First Results of Gerda Phase II
V. D'Andrea* on behalf of the GERDA Collaboration
*corresponding author
Full text: pdf
Pre-published on: March 03, 2017
Published on: June 20, 2017
Abstract
The GErmanium Detector Array (GERDA ) experiment, located at the Laboratori Nazionali del Gran Sasso, searches for the 0νββ decay of $^{76}$Ge. GERDA Phase II was started in December 2015, aiming to reach a sensitivity on the 0νββ decay half-life larger than 10$^{26}$ yr in three yr of data taking with about 100 kg·yr exposure with background index of about 10$^{−3}$ cts/(keV·kg·yr).
The major upgrade of Phase II is the deployment of thirty newly produced Broad Energy Germanium detectors. They contribute to the background reduction with better energy resolution and enhanced pulse shape discrimination. To achieve the necessary background reduction, the setup was complemented with LAr veto.
After 6 months of operation a first data release with 10.8 kg·yr exposure was performed, showing that the background goal has been achieved. A new lower limit on the 0νββ decay half life of Ge-76 of 5.3 · 10$^{25}$ yr (90% C.L.) has been set.
DOI: https://doi.org/10.22323/1.283.0098
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.