Results on ββ decay with emission of two neutrinos or Majorons in ⁷⁶Ge from GERDA Phase I

M. Agostini , M. Allardt , A.M. Bakalyarov , M. Balata , I. Barabanov , N. Barros , L. Baudis , C. Bauer

show 104 more authors

N. Becerici-Schmidt E. Bellotti S. Belogurov S.T. Belyaev G. Benato A. Bettini L. Bezrukov T. Bode D. Borowicz V. Brudanin R. Brugnera D. Budj\'a\v{s} A. Caldwell C. Cattadori A. Chernogorov V. D'Andrea E.V. Demidova A. Di Vacri A. Domula E. Doroshkevich V. Egorov R. Falkenstein O. Fedorova K. Freund N. Frodyma A. Gangapshev A. Garfagnini P. Grabmayr V. Gurentsov K. Gusev A. Hegai M. Heisel S. Hemmer G. Heusser W. Hofmann M. Hult L.V. Inzhechik J. Janicsk\'o Cs\'athy J. Jochum M. Junker V. Kazalov T. Kihm I.V. Kirpichnikov A. Kirsch A. Klimenko K.T. Kn\"opfle O. Kochetov V.N. Kornoukhov V.V. Kuzminov M. Laubenstein A. Lazzaro V.I. Lebedev B. Lehnert H.Y. Liao M. Lindner I. Lippi A. Lubashevskiy B. Lubsandorzhiev G. Lutter C. Macolino B. Majorovits W. Maneschg E. Medinaceli M. Misiaszek P. Moseev I. Nemchenok D. Palioselitis K. Panas L. Pandola K. Pelczar A. Pullia S. Riboldi N. Rumyantseva C. Sada M. Salathe C. Schmitt J. Schreiner O. Schulz B. Schwingenheuer S. Sch\"onert O. Selivanenko M. Shirchenko H. Simgen A. Smolnikov L. Stanco M. Stepaniuk C.A. Ur L. Vanhoefer A.A. Vasenko A. Veresnikova K. von Sturm V. Wagner M. Walter A. Wegmann T. Wester H. Wilsenach M. Wojcik E. Yanovich P. Zavarise I. Zhitnikov S.V. Zhukov D. Zinatulina K. Zuber G. Zuzel

Authors on Pith no claims yet

classification ⚛️ nucl-ex physics.ins-det

keywords betadecaywereemissiongerdaphaseprocessesresults

0 comments

read the original abstract

A search for neutrinoless $\beta\beta$ 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 n = 1, 2, 3, 7 were searched for. No signals were found and lower limits of the order of 10$^{23}$ yr on their half-lives were derived, yielding substantially improved results compared to previous experiments with $^{76}$Ge. A new result for the half-life of the neutrino-accompanied $\beta\beta$ decay of $^{76}$Ge with significantly reduced uncertainties is also given, resulting in $T^{2\nu}_{1/2} = (1.926 \pm 0.095)\cdot10^{21}$ yr.

This paper has not been read by Pith yet.

Results on ββ decay with emission of two neutrinos or Majorons in ⁷⁶Ge from GERDA Phase I

discussion (0)