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Results on Neutrinoless Double-βDecay ofGe76from Phase I of the GERDA Experiment

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Agostini, M., Allardt, M., Andreotti, E., Bakalyarov, A. M., Balata, M., Barabanov, I., Barnabé 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., Egorov, V., Falkenstein, R., Ferella, A., Freund, K., Frodyma, N., 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, M., Inzhechik, L. V., Ioannucci, L., Janicskó Csáthy, J., Jochum, J., Junker, M., Kihm, T., Kirpichnikov, I. V., Kirsch, A., Klimenko, A., 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., Liu, X., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Machado, A. A., Majorovits, B., Maneschg, W., Misiaszek, M., Nemchenok, I., Nisi, S., O’Shaughnessy, C., Pandola, L., Pelczar, K., Pessina, G., Pullia, A., Riboldi, S., Rumyantseva, N., Sada, C., Salathe, M., Schmitt, C., Schreiner, J., Schulz, O., Schwingenheuer, B., Schönert, 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, M., Yanovich, E., Zavarise, P., Zhitnikov, I., Zhukov, S. V., Zinatulina, D., Zuber, K., Zuzel, G.·2013·Physical Review Letters
DOI 10.1103/physrevlett.111.122503
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Abstract

Neutrinoless double beta decay is a process that violates lepton number conservation. It is predicted to occur in extensions of the standard model of particle physics. This Letter reports the results from phase I of the Germanium Detector Array (GERDA) experiment at the Gran Sasso Laboratory (Italy) searching for neutrinoless double beta decay of the isotope $^{76}\mathrm{Ge}$. Data considered in the present analysis have been collected between November 2011 and May 2013 with a total exposure of 21.6 kg yr. A blind analysis is performed. The background index is about $1\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}2}\text{ }\text{ }\mathrm{counts}/(\mathrm{keV}\text{ }\mathrm{kg}\text{ }\mathrm{yr})$ after pulse shape discrimination. No signal is observed and a lower limit is derived for the half-life of neutrinoless double beta decay of $^{76}\mathrm{Ge}$, ${T}_{1/2}^{0\ensuremath{\nu}}>2.1\ifmmode\times\else\texttimes\fi{}{10}^{25}\text{ }\text{ }\mathrm{yr}$ (90% C.L.). The combination with the results from the previous experiments with $^{76}\mathrm{Ge}$ yields ${T}_{1/2}^{0\ensuremath{\nu}}>3.0\ifmmode\times\else\texttimes\fi{}{10}^{25}\text{ }\text{ }\mathrm{yr}$ (90% C.L.).

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Authors
Agostini, M., Allardt, M., Andreotti, E., Bakalyarov, A. M., Balata, M., Barabanov, I., Barnabé 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., Egorov, V., Falkenstein, R., Ferella, A., Freund, K., Frodyma, N., 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, M., Inzhechik, L. V., Ioannucci, L., Janicskó Csáthy, J., Jochum, J., Junker, M., Kihm, T., Kirpichnikov, I. V., Kirsch, A., Klimenko, A., 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., Liu, X., Lubashevskiy, A., Lubsandorzhiev, B., Lutter, G., Macolino, C., Machado, A. A., Majorovits, B., Maneschg, W., Misiaszek, M., Nemchenok, I., Nisi, S., O’Shaughnessy, C., Pandola, L., Pelczar, K., Pessina, G., Pullia, A., Riboldi, S., Rumyantseva, N., Sada, C., Salathe, M., Schmitt, C., Schreiner, J., Schulz, O., Schwingenheuer, B., Schönert, 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, M., Yanovich, E., Zavarise, P., Zhitnikov, I., Zhukov, S. V., Zinatulina, D., Zuber, K., & Zuzel, G.
Venue
Physical Review Letters
Publisher
American Physical Society (APS)
Published
2013-09-19
Volume
111
Issue
12
Pages
122503-122503
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
DOI
10.1103/physrevlett.111.122503
OpenAlex
W2170919504
Cited by
519
References
0
FWCI
47.65
Type
journal article
Language
en
Open access
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Agostini, M., Allardt, M., Andreotti, E., Bakalyarov, A. M., Balata, M., Barabanov, I., Barnabé 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., . . . Zuzel, G. (2013). Results on Neutrinoless Double-βDecay ofGe76from Phase I of the GERDA Experiment. Physical Review Letters. https://doi.org/10.1103/physrevlett.111.122503

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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