Details

Autor(en) / Beteiligte

• Agostini, M
• Bakalyarov, A M
• Balata, M
• Barabanov, I
• Baudis, L
• Bauer, C
• Belogurov, S
• Bettini, A
• Bezrukov, L
• Borowicz, D
• Brudanin, V
• Brugnera, R
• Caldwell, A
• Cattadori, C
• Chernogorov, A
• Comellato, T
• D'Andrea, V
• Demidova, E V
• Domula, A
• Doroshkevich, E
• Egorov, V
• Falkenstein, R
• Fomina, M
• Gangapshev, A
• Garfagnini, A
• Giordano, M
• Grabmayr, P
• Gurentsov, V
• Gusev, K
• Hegai, A
• Heisel, M
• Hemmer, S
• Hiller, R
• Hofmann, W
• Hult, M
• Inzhechik, L V
• Jochum, J
• Junker, M
• Kazalov, V
• Kermaïdic, Y
• Kihm, T
• Kirpichnikov, I V
• Kirsch, A
• Kish, A
• Klimenko, A
• Kneißl, R
• Knöpfle, K T
• Kochetov, O
• Kornoukhov, V N
• Krause, P
• Kuzminov, V V
• Laubenstein, M
• Lazzaro, A
• Lindner, M
• Lippi, I
• Lubsandorzhiev, B
• Lutter, G
• Macolino, C
• Maneschg, W
• Miloradovic, M
• Mingazheva, R
• Misiaszek, M
• Moseev, P
• Nemchenok, I
• Panas, K
• Pandola, L
• Pelczar, K
• Pertoldi, L
• Piseri, P
• Pullia, A
• Ransom, C
• Riboldi, S
• Rumyantseva, N
• Sada, C
• Sala, E
• Salamida, F
• Schneider, B
• Schönert, S
• Schütz, A-K
• Schulz, O
• Schwarz, M
• Schwingenheuer, B
• Selivanenko, O
• Shevchik, E
• Shirchenko, M
• Smolnikov, A
• Stanco, L
• Stukov, D
• Vasenko, A A
• Veresnikova, A
• von Sturm, K
• Wagner, V
• Wegmann, A
• Wiesinger, C
• Wojcik, M
• Zhitnikov, I
• Zhukov, S V
• Zschocke, A
• Zsigmond, A J
• Zuber, K

Titel

Probing Majorana neutrinos with double-β decay

Ist Teil von

• Science (American Association for the Advancement of Science), 2019-09, Vol.365 (6460), p.1445-1448

Ort / Verlag

United States: The American Association for the Advancement of Science

Erscheinungsjahr

2019

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• 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 Ge 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 > 0.9 × 10 years (90% C.L.). Our sensitivity, assuming no signal, is 1.1 × 10 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.