Details

Autor(en) / Beteiligte

• Agostini, M.
• Alexander, A.
• Bakalyarov, A. M.
• Balata, M.
• Barabanov, I.
• Baudis, L.
• Bauer, C.
• Belogurov, S.
• Bettini, A.
• Bezrukov, L.
• Biancacci, V.
• Bossio, E.
• Bothe, V.
• Brudanin, V.
• Brugnera, R.
• Caldwell, A.
• Cattadori, C.
• Chernogorov, A.
• Comellato, T.
• D’Andrea, V.
• Demidova, E. V.
• Marco, N. Di
• Doroshkevich, E.
• Fischer, F.
• Fomina, M.
• Grabmayr, P.
• Gurentsov, V.
• Gusev, K.
• Hakenmüller, J.
• Hemmer, S.
• Hofmann, W.
• Huang, J.
• Hult, M.
• Csáthy, J. Janicskó
• Jochum, J.
• Junker, M.
• Kazalov, V.
• Kermaïdic, Y.
• Khushbakht, H.
• Kihm, T.
• Kilgus, K.
• Kirpichnikov, I. V.
• Klimenko, A.
• Knöpfle, K. T.
• 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.
• Maneschg, W.
• Manzanillas, L.
• Misiaszek, M.
• Morella, M.
• Müller, Y.
• Nemchenok, I.
• Pandola, L.
• Pelczar, K.
• Pertoldi, L.
• Piseri, P.
• Pullia, A.
• Ransom, C.
• Rauscher, L.
• Redchuk, M.
• Riboldi, S.
• Rumyantseva, N.
• 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.
• Vasenko, A. A.
• Veresnikova, A.
• Vignoli, C.
• Sturm, K. von
• Wester, T.
• Wiesinger, C.
• Wojcik, M.
• Yanovich, E.
• Zatschler, B.
• Zhukov, S. V.
• Zuber, K.
• Zuzel, G.

Titel

An improved limit on the neutrinoless double-electron capture of $$^{36}$$Ar with GERDA

Ist Teil von

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

Erscheinungsjahr

2024

Quelle

SpringerLink (Online service)

Beschreibungen/Notizen

• Abstract The GERmanium Detector Array ( Gerda ) experiment operated enriched high-purity germanium detectors in a liquid argon cryostat, which contains 0.33% of $$^{36}$$ 36 Ar, a candidate isotope for the two-neutrino double-electron capture (2 $$\nu $$ ν ECEC) and therefore for the neutrinoless double-electron capture (0 $$\nu $$ ν ECEC). If detected, this process would give evidence of lepton number violation and the Majorana nature of neutrinos. In the radiative 0 $$\nu $$ ν ECEC of $$^{36}$$ 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 $$^{36}$$ 36 Ar 0 $$\nu $$ 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 $$T_{1/2} >1.5\cdot 10^{22} $$ T 1 / 2 > 1.5 · 10 22  year.