Volume 314 - The European Physical Society Conference on High Energy Physics (EPS-HEP2017) - Neutrino Phyisics (Parallel Session). Conveners: Francesca Di Lodovico; Enrique Fernandez-Martinez; Livia Ludhova. Scientific Secretary: Chiara Sirignano.
GERDA Phase II: recent results in the search for neutrinoless double beta decay
A.J. Zsigmond*  on behalf of the GERDA Collaboration
*: corresponding author
Full text: pdf
Pre-published on: October 19, 2017
Published on: March 20, 2018
Abstract
The GERDA (GERmanium Detector Array) experiment, located at the Laboratori Nazionali del Gran Sasso, is searching for neutrinoless double beta (0νββ) decay of 76Ge. Since the end of 2015, in Phase II of the experiment, 35 kg of enriched high-purity germanium detectors are operated in liquid argon, that serves as cooling for the detectors as well as active shield against external radiation. The aim is a sensitivity on the 0νββ decay half-life larger than 1026 yr with about 100 kg⋅yr exposure and a background level of about 10−3 cts/(keV⋅kg⋅yr). An overview of the analysis of the data collected so far is presented with an emphasis on the background rejection techniques and their performance together with the half-life limit.
DOI: https://doi.org/10.22323/1.314.0150
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