Details

Autor(en) / Beteiligte

• Agostini, M
• Alexander, A
• Araujo, G. R
• Bakalyarov, A. M
• Balata, M
• Barabanov, I
• Baudis, L
• Belogurov, S
• Bettini, A
• Bezrukov, L
• Biancacci, V
• Bossio, E
• Bothe, V
• Brudanin, V
• Caldwell, A
• Cattadori, C
• Chernogorov, A
• Comellato, T
• D’Andrea, V
• Demidova, E. V
• Marco, N. Di
• Doroshkevich, E
• Fischer, F
• Fomina, M
• Gangapshev, A
• Garfagnini, A
• Gooch, C
• Grabmayr, P
• Gurentsov, V
• Gusev, K
• Hakenmüller, J
• Hofmann, W
• Hult, M
• Inzhechik, L. V
• Csáthy, J. Janicskó
• Jochum, J
• Junker, M
• Kazalov, V
• Kermaïdic, Y
• Khushbakht, H
• Kihm, T
• Kilgus, K
• Klimenko, A
• Kneißl, R
• Kochetov, O
• Kornoukhov, V. N
• Korošec, M
• Krause, P
• Kuzminov, V. V
• Laubenstein, M
• Lindner, M
• Lippi, I
• Lubashevskiy, A
• Lubsandorzhiev, B
• Lutter, G
• Macolino, C
• Majorovits, B
• Maneschg, W
• Manzanillas, L
• Marshall, G
• Misiaszek, M
• Morella, M
• Müller, Y
• Nemchenok, I
• Pelczar, K
• Pertoldi, L
• Piseri, P
• Ransom, C
• Rauscher, L
• Redchuk, M
• Riboldi, S
• Sada, C
• Salamida, F
• Schönert, S
• Schreiner, J
• Schütt, M
• Schütz, A.-K
• Schulz, O
• Schwarz, M
• Schwingenheuer, B
• Selivanenko, O
• Shevchik, E
• Shirchenko, M
• Shtembari, L
• Simgen, H
• Smolnikov, A
• Stukov, D
• Veresnikova, A
• Vignoli, C
• Sturm, K. von
• Wester, T
• Wojcik, M
• Yanovich, E
• Zatschler, B
• Zhitnikov, I
• Zhukov, S. V
• Zschocke, A
• Zsigmond, A. J
• Zuber, K
• Zuzel, G

Titel

An improved limit on the neutrinoless double-electron capture of 36Ar with GERDA

Ist Teil von

• The European physical journal. C, Particles and fields, 2024-01, Vol.84 (1), p.34

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2024

Quelle

EZB-FREE-00999 freely available EZB journals

Beschreibungen/Notizen

• The GERmanium Detector Array ( Gerda ) experiment operated enriched high-purity germanium detectors in a liquid argon cryostat, which contains 0.33% of 36 Ar, a candidate isotope for the two-neutrino double-electron capture (2 ν ECEC) and therefore for the neutrinoless double-electron capture (0 ν ECEC). If detected, this process would give evidence of lepton number violation and the Majorana nature of neutrinos. In the radiative 0 ν ECEC of 36 Ar, a monochromatic photon is emitted with an energy of 429.88 keV, which may be detected by the Gerda germanium detectors. We searched for the 36 Ar 0 ν ECEC with Gerda data, with a total live time of 4.34 year (3.08 year accumulated during Gerda Phase II and 1.26 year during Gerda Phase I). No signal was found and a 90% CL lower limit on the half-life of this process was established T 1 / 2 > 1.5 · 10 22  year.