Final Results of GERDA on the Two-Neutrino Double- β Decay Half-Life of Ge 76
2023; American Physical Society; Volume: 131; Issue: 14 Linguagem: Inglês
10.1103/physrevlett.131.142501
ISSN1092-0145
AutoresM. Agostini, A. Alexander, G. R. Araujo, A. M. Bakalyarov, M. Balata, И. Р. Барабанов, L. Baudis, C. Bauer, S. Belogurov, A. Bettini, L. Bezrukov, V. Biancacci, E. Bossio, V. Bothe, R. Brugnera, A. Caldwell, Serena Calgaro, C. Cattadori, A. Chernogorov, P.-J. Chiu, T. Comellato, V. D’Andrea, É. V. Demidova, A. Di Giacinto, N. Di Marco, E. Doroshkevich, F. Fischer, M. Fomina, A. M. Gangapshev, A. Garfagnini, C. Gooch, P. Grabmayr, V. Gurentsov, K. Gusev, S. Hackenmüller, S. Hemmer, W. Hofmann, J. Huang, M. Hult, Л. В. Инжечик, J. Janicskó Csáthy, J. Jochum, M. Junker, V. V. Kazalov, Y. Kermaïdic, H. Khushbakht, T. Kihm, K. Kilgus, I. V. Kirpichnikov, A. Klimenko, K.T. Knöpfle, O. Kochetov, В. Н. Корноухов, P. Krause, V. V. Kuzminov, M. Laubenstein, B. Lehnert, M. Lindner, I. Lippi, A. Lubashevskiy, Б. Лубсандоржиев, G. Lutter, C. Macolino, B. Majorovits, W. Maneschg, L. Manzanillas, G. Marshall, M. Miloradovic, R. Mingazheva, M. Misiaszek, M. Morella, Y. Müller, I. Nemchenok, M. Neuberger, L. Pandola, K. Pelczar, L. Pertoldi, P. Piseri, A. Pullia, C. Ransom, L. Rauscher, M. Redchuk, S. Riboldi, N. Rumyantseva, C. Sada, Simon Sailer, F. Salamida, S. Schönert, J. Schreiner, M. Schütt, A.-K. Schütz, O. Schulz, M. Schwarz, B. Schwingenheuer, O. Selivanenko, E. Shevchik, M. Shirchenko, L. Shtembari, H. Simgen, A. Smolnikov, D. Stukov, S. Sullivan, A. A. Vasenko, A. Veresnikova, C. Vignoli, K. von Sturm, T. Wester, Christoph Wiesinger, M. Wójcik, E. Yanovich, Birgit Zatschler, I. Zhitnikov, S. V. Zhukov, D. Zinatulina, A. Zschocke, A. J. Zsigmond, Κ. Zuber, G. Zuzel,
Tópico(s)Nuclear physics research studies
ResumoWe present the measurement of the two-neutrino double-β decay rate of 76Ge performed with the GERDA Phase II experiment. With a subset of the entire GERDA exposure, 11.8 kg yr, the half-life of the process has been determined: T2ν1/2=(2.022±0.018stat±0.038syst)×1021 yr. This is the most precise determination of the 76Ge two-neutrino double-β decay half-life and one of the most precise measurements of a double-β decay process. The relevant nuclear matrix element can be extracted: M2νeff=(0.101±0.001).Received 13 May 2023Accepted 15 August 2023DOI:https://doi.org/10.1103/PhysRevLett.131.142501Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by the Max Planck Society.Published by the American Physical SocietyPhysics Subject Headings (PhySH)Research AreasDouble beta decayNuclear structure & decaysProperties59 ≤ A ≤ 89Nuclear Physics
Referência(s)