| Literature DB >> 29694176 |
M Agostini1, A M Bakalyarov2, M Balata1, I Barabanov3, L Baudis4, C Bauer5, E Bellotti6,7, S Belogurov3,8, A Bettini9,10, L Bezrukov3, J Biernat11, T Bode12, D Borowicz13, V Brudanin13, R Brugnera9,10, A Caldwell14, C Cattadori7, A Chernogorov8, T Comellato12, V D'Andrea1, E V Demidova8, N Di Marco1, A Domula15, E Doroshkevich3, V Egorov13, R Falkenstein16, A Gangapshev5,3, A Garfagnini9,10, P Grabmayr16, V Gurentsov3, K Gusev13,2,12, J Hakenmüller5, A Hegai16, M Heisel5, S Hemmer10, R Hiller4, W Hofmann5, M Hult17, L V Inzhechik3, J Janicskó Csáthy12, J Jochum16, M Junker1, V Kazalov3, Y Kermaidic5, T Kihm5, I V Kirpichnikov8, A Kirsch5, A Kish4, A Klimenko13,5, R Kneißl14, K T Knöpfle5, O Kochetov13, V N Kornoukhov3,8, V V Kuzminov3, M Laubenstein1, A Lazzaro12, M Lindner5, I Lippi10, A Lubashevskiy13, B Lubsandorzhiev3, G Lutter17, C Macolino1, B Majorovits14, W Maneschg5, M Miloradovic4, R Mingazheva4, M Misiaszek11, P Moseev3, I Nemchenok13, K Panas11, L Pandola18, K Pelczar1, L Pertoldi9,10, A Pullia19, C Ransom4, S Riboldi19, N Rumyantseva13,2, C Sada9,10, F Salamida20, C Schmitt16, B Schneider15, S Schönert12, A-K Schütz16, O Schulz14, B Schwingenheuer5, O Selivanenko3, E Shevchik13, M Shirchenko13, H Simgen5, A Smolnikov13,5, L Stanco10, L Vanhoefer14, A A Vasenko8, A Veresnikova3, K von Sturm9,10, V Wagner5, A Wegmann5, T Wester15, C Wiesinger12, M Wojcik11, E Yanovich3, I Zhitnikov13, S V Zhukov2, D Zinatulina13, A Zschocke16, A J Zsigmond14, K Zuber15, G Zuzel11.
Abstract
The GERDA experiment searches for the lepton-number-violating neutrinoless double-β decay of ^{76}Ge (^{76}Ge→^{76}Se+2e^{-}) operating bare Ge diodes with an enriched ^{76}Ge fraction in liquid argon. The exposure for broad-energy germanium type (BEGe) detectors is increased threefold with respect to our previous data release. The BEGe detectors feature an excellent background suppression from the analysis of the time profile of the detector signals. In the analysis window a background level of 1.0_{-0.4}^{+0.6}×10^{-3} counts/(keV kg yr) has been achieved; if normalized to the energy resolution this is the lowest ever achieved in any 0νββ experiment. No signal is observed and a new 90% C.L. lower limit for the half-life of 8.0×10^{25} yr is placed when combining with our previous data. The expected median sensitivity assuming no signal is 5.8×10^{25} yr.Entities:
Year: 2018 PMID： 29694176 DOI： 10.1103/PhysRevLett.120.132503
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161