Results on ... decay with emission of two neutrinos or Majorons in ...Ge from GERDA Phase I: GERDA Collaboration

• Published in: The European physical journal. C, Particles and fields Particles and fields, 2015-09, Vol.75 (9), p.1-12
• Main Authors: Agostini, M, Allardt, M, Bakalyarov, A M, Balata, M, Barabanov, I, Barros, N, Baudis, L, Becerici-schmidt, N, Bellotti, E, Belogurov, S, Belyaev, S T, Benato, G, Bettini, A, Bode, T, Borowicz, D, Brudanin, V, Brugnera, R, Budjás, D, Caldwell, A, Cattadori, C, Chernogorov, A, Demidova, E V, Doroshkevich, E, Egorov, V, Falkenstein, R, Fedorova, O, Freund, K, Gangapshev, A, Garfagnini, A, Grabmayr, P, Gusev, K, Hegai, A, Heisel, M, Hemmer, S, Heusser, G, Hofmann, W, Hult, M, Inzhechik, L V, Csáthy, J Janicskó, Jochum, J, Junker, M, Kazalov, V, Kihm, T, 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, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Majorovits, B, Maneschg, W, Medinaceli, E, Misiaszek, M, Palioselitis, D, Panas, K, Pandola, L, Pullia, A, Rumyantseva, N, Sada, C, Salathe, M, Schmitt, C, Schneider, B, Schreiner, J, Schütz, A-k, Schulz, O, Selivanenko, O, Shirchenko, M, Simgen, H, Smolnikov, A, Stanco, L, Stepaniuk, M, Ur, C A, Vanhoefer, L, Vasenko, A A, Veresnikova, A, von Sturm, K, Wagner, V, Walter, M, Wegmann, A, Wester, T, Wilsenach, H, Wojcik, M, Yanovich, E, Zavarise, P, Zhitnikov, I, Zhukov, S V, Zinatulina, D, Zuber, K, Zuzel, G
• Format: Article
• Language: English
• Subjects: Arrays; Bosons; Decomposition; Emission; Germanium; Half life; Spectra; Texts
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-015-3627-y

A search for neutrinoless ... decay processes accompanied with Majoron emission has been performed using data collected during Phase I of the GERmanium Detector Array (GERDA) experiment at the Laboratori Nazionali del Gran Sasso of INFN (Italy). Processes with spectral indices ... were searched for. No signals were found and lower limits of the order of 10... yr on their half-lives were derived, yielding substantially improved results compared to previous experiments with ...Ge. A new result for the half-life of the neutrino-accompanied ... decay of ...Ge with significantly reduced uncertainties is also given, resulting in ... yr.