| Literature DB >> 31488705 |
M Agostini1, A M Bakalyarov2, M Balata3, I Barabanov4, L Baudis5, C Bauer6, E Bellotti7,8, S Belogurov4,9, A Bettini10,11, L Bezrukov4, D Borowicz12, V Brudanin12, R Brugnera10,11, A Caldwell13, C Cattadori8, A Chernogorov9, T Comellato1, V D'Andrea14, E V Demidova9, N Di Marco3, A Domula15, E Doroshkevich4, V Egorov12, R Falkenstein16, M Fomina12, A Gangapshev4, A Garfagnini10,11, M Giordano14, P Grabmayr16, V Gurentsov4, K Gusev1,2,12, J Hakenmüller6, A Hegai16, M Heisel6, S Hemmer11, R Hiller5, W Hofmann6, M Hult17, L V Inzhechik4, J Janicskó Csáthy1, J Jochum16, M Junker3, V Kazalov4, Y Kermaïdic6, T Kihm6, I V Kirpichnikov9, A Kirsch6, A Kish5, A Klimenko6,12, R Kneißl13, K T Knöpfle18, O Kochetov12, V N Kornoukhov4,9, P Krause1, V V Kuzminov4, M Laubenstein3, A Lazzaro1, M Lindner6, I Lippi11, A Lubashevskiy12, B Lubsandorzhiev4, G Lutter17, C Macolino3, B Majorovits13, W Maneschg6, M Miloradovic5, R Mingazheva5, M Misiaszek19, P Moseev4, I Nemchenok12, K Panas19, L Pandola20, K Pelczar3, L Pertoldi10,11, P Piseri21, A Pullia21, C Ransom5, S Riboldi21, N Rumyantseva2,12, C Sada10,11, E Sala13, F Salamida14, C Schmitt16, B Schneider15, S Schönert1, A-K Schütz16, O Schulz13, M Schwarz1, B Schwingenheuer6, O Selivanenko4, E Shevchik12, M Shirchenko12, H Simgen6, A Smolnikov6,12, L Stanco11, D Stukov2, L Vanhoefer13, A A Vasenko9, A Veresnikova4, K von Sturm10,11, V Wagner6, A Wegmann6, T Wester15, C Wiesinger1, M Wojcik19, E Yanovich4, I Zhitnikov12, S V Zhukov2, D Zinatulina12, A Zschocke16, A J Zsigmond13, K Zuber15, G Zuzel19.
Abstract
A discovery that neutrinos are Majorana fermions would have profound implications for particle physics and cosmology. The Majorana character of neutrinos would make possible the neutrinoless double-β (0νββ) decay, a matter-creating process without the balancing emission of antimatter. The GERDA Collaboration searches for the 0νββ decay of 76Ge by operating bare germanium detectors in an active liquid argon shield. With a total exposure of 82.4 kg⋅year, we observe no signal and derive a lower half-life limit of T 1/2 > 0.9 × 1026 years (90% C.L.). Our T 1/2 sensitivity, assuming no signal, is 1.1 × 1026 years. Combining the latter with those from other 0νββ decay searches yields a sensitivity to the effective Majorana neutrino mass of 0.07 to 0.16 electron volts.Entities:
Year: 2019 PMID： 31488705 DOI： 10.1126/science.aav8613
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728