/ Experiment-Nucl


Search of Neutrinoless Double Beta Decay with the GERDA Experiment


Agostini, M. (Munich, Tech. U., Universe) ; Allardt, M. (Dresden, Tech. U.) ; Bakalyarov, A.M. (Kurchatov Inst., Moscow) ; Balata, M. (Gran Sasso) ; Barabanov, I. (Moscow, INR) ; Baudis, L. (Zurich U.) ; Bauer, C. (Heidelberg, Max Planck Inst.) ; Becerici-Schmidt, N. (Munich, Max Planck Inst.) ; Bellotti, E. (INFN, Milan Bicocca) ; Belogurov, S. (Moscow, INR) ; Belyaev, S.T. (Kurchatov Inst., Moscow) ; Benato, G. (Zurich U.) ; Bettini, A. (INFN, Padua) ; Bezrukov, L. (Moscow, INR) ; Bode, T. (Munich, Tech. U., Universe) ; Borowicz, D. (Jagiellonian U.) ; Brudanin, V. (Dubna, JINR) ; Brugnera, R. (INFN, Padua) ; Budjáš, D. (Munich, Tech. U., Universe) ; Caldwell, A. (Munich, Max Planck Inst.) ; Cattadori, C. (INFN, Milan Bicocca) ; Chernogorov, A. (Moscow, ITEP) ; D'Andrea, V. (Gran Sasso) ; Demidova, E.V. (Moscow, ITEP) ; Domula, A. (Dresden, Tech. U.) ; Doroshkevich, E. (Moscow, INR) ; Egorov, V. (Dubna, JINR) ; Falkenstein, R. (Tubingen U.) ; Fedorova, O. (Moscow, INR) ; Freund, K. (Tubingen U.) ; Frodyma, N. (Jagiellonian U.) ; Gangapshev, A. (Heidelberg, Max Planck Inst.) ; Garfagnini, A. (INFN, Padua) ; Gooch, C. (Munich, Max Planck Inst.) ; Gotti, C. (INFN, Milan Bicocca) ; Grabmayr, P. (Tubingen U.) ; Gurentsov, V. (Moscow, INR) ; Gusev, K. (Dubna, JINR) ; Hampel, W. (Heidelberg, Max Planck Inst.) ; Hegai, A. (Tubingen U.) ; Heisel, M. (Heidelberg, Max Planck Inst.) ; Hemmer, S. (INFN, Padua) ; Heusser, G. (Heidelberg, Max Planck Inst.) ; Hoffmann, W. (Heidelberg, Max Planck Inst.) ; Hult, M. (Geel, JRC) ; Inzhechik, L.V. (Moscow, INR) ; Ioannucci, L. (Gran Sasso) ; Janicksó Csáthy, J. (Munich, Tech. U., Universe) ; Jochum, J. (Tubingen U.) ; Junker, M. (Gran Sasso) ; Kazalov, V. (Moscow, INR) ; Kihm, T. (Heidelberg, Max Planck Inst.) ; Kirpichnikov, I.V. (Moscow, ITEP) ; Kirsch, A. (Heidelberg, Max Planck Inst.) ; Klimenko, A. (Dubna, JINR) ; Knöpfle, K.T. (Heidelberg, Max Planck Inst.) ; Kochetov, O. (Dubna, JINR) ; Kornoukhov, V.N. (Moscow, INR) ; Kuzminov, V.V. (Moscow, INR) ; Laubenstein, M. (Gran Sasso) ; Lazzaro, A. (Munich, Tech. U., Universe) ; Lebedev, V.I. (Kurchatov Inst., Moscow) ; Lehnert, B. (Dresden, Tech. U.) ; Liao, H.Y. (Munich, Max Planck Inst.) ; Lindner, M. (Heidelberg, Max Planck Inst.) ; Lippi, I. (INFN, Padua) ; Lubashevskiy, A. (Heidelberg, Max Planck Inst.) ; Lubsandorzhiev, B. (Moscow, INR) ; Lutter, G. (Geel, JRC) ; Macolino, C. (Gran Sasso) ; Majorovits, B. (Munich, Max Planck Inst.) ; Maneschg, W. (Heidelberg, Max Planck Inst.) ; Marissens, G. (Geel, JRC) ; Medinaceli, E. (INFN, Padua) ; Misiaszek, M. (Jagiellonian U.) ; Moseev, P. (Moscow, INR) ; Nemchenok, I. (Dubna, JINR) ; Nisi, S. (Gran Sasso) ; Palioselitis, D. (Munich, Max Planck Inst.) ; Panas, K. (Jagiellonian U.) ; Pandola, L. (Gran Sasso) ; Pelczar, K. (Jagiellonian U.) ; Pessina, G. (INFN, Milan Bicocca) ; Pullia, A. (Milan U.) ; Reissfelder, M. (Heidelberg, Max Planck Inst.) ; Riboldi, S. (Milan U.) ; Rumyantseva, N. (Dubna, JINR) ; Sada, C. (INFN, Padua) ; Salathe, M. (Heidelberg, Max Planck Inst.) ; Schmitt, C. (Tubingen U.) ; Schneider, B. (Dresden, Tech. U.) ; Schreiner, J. (Heidelberg, Max Planck Inst.) ; Schulz, O. (Munich, Max Planck Inst.) ; Schwingenheuer, B. (Heidelberg, Max Planck Inst.) ; Schönert, S. (Munich, Tech. U., Universe) ; Seitz, H. (Munich, Max Planck Inst.) ; Selivalenko, O. (Moscow, INR) ; Shevchik, E. (Dubna, JINR) ; Shirchenko, M. (Dubna, JINR) ; Simgen, H. (Heidelberg, Max Planck Inst.) ; Smolnikov, A. (Heidelberg, Max Planck Inst.) ; Stanco, L. (INFN, Padua) ; Stepaniuk, M. (Heidelberg, Max Planck Inst.) ; Strecker, H. (Heidelberg, Max Planck Inst.) ; Ur, C.A. (INFN, Padua) ; Vanhoefer, L. (Munich, Max Planck Inst.) ; Vasenko, A.A. (Moscow, ITEP) ; Veresnikova, A. (Moscow, INR) ; von Sturm, K. (INFN, Padua) ; Wagner, V. (Heidelberg, Max Planck Inst.) ; Walter, M. (Zurich U.) ; Wegmann, A. (Heidelberg, Max Planck Inst.) ; Wester, T. (Dresden, Tech. U.) ; Wiesinger, C. (Munich, Tech. U., Universe) ; Wilsenach, H. (Dresden, Tech. U.) ; Wojcik, M. (Jagiellonian U.) ; Yanovich, E. (Moscow, INR) ; Zavarise, P. (Gran Sasso) ; Zhitnikov, I. (Dubna, JINR) ; Zhukov, S.V. (Kurchatov Inst., Moscow) ; Zinatulina, D. (Dubna, JINR) ; Zuber, K. (Dresden, Tech. U.) ; Zuzel, G. (Jagiellonian U.)

Published in: Nucl.Part.Phys.Proc.
Year: 2016
Vol.: 273-275
Page No: 1876-1882
Pages: 7
Year: 2016-06-02

Abstract: The GERDA (GERmanium Detector Array) is an experiment for the search of neutrinoless double beta decay ( 0νββ ) in 76 Ge, located at Laboratori Nazionali del Gran Sasso of INFN (Italy). In the first phase of the experiment, a 90% confidence level (C.L.) sensitivity of 2.4⋅1025 yr on the 0νββ decay half-life was achieved with a 21.6 kg⋅yr exposure and an unprecedented background index in the region of interest of 10 −2 counts/(keV⋅kg⋅yr). No excess of signal events was found, and an experimental lower limit on the half-life of 2.1 ⋅ 10 25 yr (90% C.L.) was established. Correspondingly, the limit on the effective Majorana neutrino mass is mee<0.2–0.4 eV , depending on the considered nuclear matrix element. The previous claim for evidence of a 0νββ decay signal is strongly disfavored, and the field of research is open again.

Keyword(s): neutrinoless double beta decay ; T1/20ν ; 76 Ge ; enriched Ge detectors ; [formula omitted] ; 76Ge

Total numbers of views: 288
Numbers of unique views: 159
DOI: 10.1016/j.nuclphysbps.2015.09.303
 Record created 2016-07-04, last modified 2016-07-04



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