Limit on Neutrinoless Double Beta Decay of 76Ge by GERDA

Agostini, M.; Allardt, M.; Andreotti, E.; Erica, Andreotti; Bakalyarov, A. M.; Balata, M.; Barabanov, I.; Heider, M. Barabè; Barnabe Heider, M.; Barros, N.; Baudis, L.; Bauer, C.; Becerici-Schmidt, N.; Bellotti, E.; Belogurov, S.; Belyaev, S. T.; Benato, G.; Bettini, A.; Bezrukov, L.; Bode, T.; Brudanin, V.; Brugnera, R.; Budjáš, D.; Caldwell, A.; Cattadori, C.; Chernogorov, A.; Cossavella, F.; Demidova, E. V.; Domula, A. R.; Egorov, V.; Falkenstein, R.; Ferella, A.; Freund, K.; Frodyma, Nikodem; Gangapshev, A.; Garfagnini, A.; Gotti, C.; Grabmayr, P.; Gurentsov, V.; Gusev, K.; Guthikonda, K. K.; Hampel, W.; Hegai, A.; Heisel, M.; Hemmer, S.; Heusser, G.; Hofmann, W.; Hult, Mikael; Inzhechik, L. V.; Csáthy, J. Janicskó; Janicsko, J.; Jochum, J.; Junker, M.; Kihm, T.; Kirpichnikov, I. V.; Kirsch, A.; Klimenko, A.; Knoepfle, K. T.; Knöpfle, K. T.; Kochetov, O.; Kornoukhov, V. N.; Kuzminov, V. V.; Laubenstein, M.; Lazzaro, A.; Lebedev, V. I.; Lehnert, B.; Liao, H. Y.; Lindner, M.; Lippi, I.; Lubashevskiy, A.; Lubashevsky, A.; Lubsandorzhiev, B.; Lutter, G.; Machado, A. A.; Guillaume, Lutter; Macolino, C.; Majorovits, B.; Maneschg, W.; Misiaszek, Marcin; Nemchenok, I.; Nisi, S.; Shaughnessy, C. O’.; Pandola, L.; Pelczar, Krzysztof; O'Shaughnessy, C.; Pessina, G.; Pullia, A.; Riboldi, S.; Rumyantseva, N.; Sada, C.; Salathe, M.; Schmitt, C.; Schreiner, J.; Schulz, O.; Schwingenheuer, B.; Schönert, S.; Schoenert, S.; Shevchik, E.; Shirchenko, M.; Simgen, H.; Smolnikov, A.; Stanco, L.; Strecker, H.; Tarka, M.; Ur, C. A.; Vasenko, A. A.; Volynets, O.; von Sturm, K.; Wagner, V.; Walter, M.; Wegmann, A.; Wester, T.; Wojcik, Marcin; Yanovich, E.; Zavarise, P.; Zhitnikov, I.; Zhukov, S. V.; Zinatulina, D.; Zuber, K.; Zuzel, Grzegorz

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Elsevier, Physics Procedia, (61), p. 828-837, 2015

DOI: 10.1016/j.phpro.2015.06.002

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Limit on Neutrinoless Double Beta Decay of 76Ge by GERDA

Journal article published in 2015 by M. Agostini, M. Allardt, E. Andreotti, Andreotti Erica, A. M. Bakalyarov, M. Balata, I. Barabanov, M. Barabè Heider, M. Barnabe Heider, N. Barros, L. Baudis, C. Bauer, N. Becerici-Schmidt, E. Bellotti, S. Belogurov and other authors.

This paper is made freely available by the publisher.

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Abstract

The Gerda experiment at the Laboratori Nazionali del Gran Sasso in Italy uses germanium detectors made from material with an enriched 76Ge isotope fraction to search for neutrinoless double beta decay of this nucleus. Applying a blind analysis we find no signal after an exposure of 21.6 kg·yr and a background of about 0.01 cts/(keV·kg·yr). A half-life limit of T0ν 1/2 > 2.1 · 1025 yr (90% C.L.) is extracted. The previous claim of a signal for 76Ge is excluded with 99% probability in a model independent way. ; JRC.G.2-Standards for Nuclear Safety, Security and Safeguard

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Limit on Neutrinoless Double Beta Decay of 76Ge by GERDA

Abstract