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27 April 2024

» arxiv » 1212.3210

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Measurement of the half-life of the two-neutrino double beta decay of Ge-76 with the Gerda experiment
GERDA Collaboration ; M. Agostini ; M. Allardt ; E. Andreotti ; A. M. Bakalyarov ; M. Balata ; I. Barabanov ; M. Barnabe Heider ; N. Barros ; L. Baudis ; C. Bauer ; N. Becerici-Schmidt ; E. Bellotti ; S. Belogurov ; S. T. Belyaev ; G. Benato ; A. Bettini ; L. Bezrukov ; T. Bode ; V. Brudanin ; R. Brugnera ; D. Budjas ; A. Caldwell ; C. Cattadori ; A. Chernogorov ; F. Cossavella ; E. V. Demidova ; A. Denisov ; A. Domula ; V. Egorov ; R. Falkenstein ; A. D. Ferella ; K. Freund ; F. Froborg ; N. Frodyma ; A. Gangapshev ; A. Garfagnini ; S. Gazzana ; P. Grambayr ; V. Gurentsov ; K. Gusev ; K. K. Guthikonda ; W. Hampel ; A. Hegai ; M. Heisel ; S. Hemmer ; G. Heusser ; W. Hofmann ; M. Hult ; L. V. Inzhechik ; L. Ioannucci ; J. Janicsko Csathy ; J. Jochum ; M. Junker ; S. Kianovsky ; I. V. Kirpichnikov ; A. Kirsch ; A. Klimenko ; K. T. Knoepfle ; O. Kochetov ; V. N. Kornoukhov ; V. Kusminov ; M. Laubenstein ; A. Lazzaro ; V. I. Lebedev ; B. Lehnert ; H. Y. Liao ; M. Lindner ; I. Lippi ; X. Liu ; A. Lubashevskiy ; B. Lubsandorzhiev ; G. Lutter ; A. A. Machado ; B. Majorovits ; W. Maneschg ; I. Nemchenok ; S. Nisi ; C. O'Shaughnessy ; L. Pandola ; K. Pelczar ; L. Peraro ; A. Pullia ; S. Riboldi ; F. Ritter ; C. Sada ; M. Salathe ; C. Schmitt ; S. Schoenert ; J. Schreiner ; O. Schulz ; B. Schwingenheuer ; E. Shevchik ; M. Shirchenko ; H. Simgen ; A. Smolnikov ; L. Stanco ; H. Strecker ; M. Tarka ; C. A. Ur ; A. A. Vasenko ; O. Volynets ; K. von Sturm ; M. Walter ; A. Wegmann ; M. Wojcik ; E. Yanovich ; P. Zavarise ; I. Zhitnikov ; S. V. Zhukov ; D. Zinatulina ; K. Zuber ; G. Zuzel ;
Date:	13 Dec 2012
Abstract:	The primary goal of the GERmanium Detector Array (Gerda) experiment at the Laboratori Nazionali del Gran Sasso of INFN is the search for the neutrinoless double beta decay of Ge-76. High-purity germanium detectors made from material enriched in Ge-76 are operated directly immersed in liquid argon, allowing for a substantial reduction of the background with respect to predecessor experiments. The first 5.04 kg yr of data collected in Phase I of the experiment have been analyzed to measure the half-life of the neutrino-accompanied double beta decay of Ge-76. The observed spectrum in the energy range between 600 and 1800 keV is dominated by the double beta decay of Ge-76. The half-life extracted from Gerda data is T(1/2) = (1.84 +0.14 -0.10) 10^{21} yr.
Source:	arXiv, 1212.3210
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