doi: 10.1103/PhysRevLett.131.142501.
Final Results of GERDA on the Two-Neutrino Double-β Decay Half-Life of ^{76}Ge
M Agostini
1
, A Alexander
1
, G R Araujo
2
, A M Bakalyarov
3
, M Balata
4
, I Barabanov
5
, L Baudis
2
, C Bauer
6
, S Belogurov
5
7
, A Bettini
8
9
, L Bezrukov
5
, V Biancacci
8
9
, E Bossio
10
, V Bothe
6
, R Brugnera
8
9
, A Caldwell
11
, S Calgaro
8
9
, C Cattadori
12
, A Chernogorov
7
3
, P-J Chiu
2
, T Comellato
10
, V D'Andrea
13
, E V Demidova
7
, A Di Giacinto
4
, N Di Marco
14
, E Doroshkevich
5
, F Fischer
11
, M Fomina
15
, A Gangapshev
6
5
, A Garfagnini
8
9
, C Gooch
11
, P Grabmayr
16
, V Gurentsov
5
, K Gusev
15
3
10
, S Hackenmüller
6
, S Hemmer
9
, W Hofmann
6
, J Huang
2
, M Hult
17
, L V Inzhechik
5
, J Janicskó Csáthy
10
, J Jochum
16
, M Junker
4
, V Kazalov
5
, Y Kermaïdic
6
, H Khushbakht
16
, T Kihm
6
, K Kilgus
16
, I V Kirpichnikov
7
, A Klimenko
15
6
, K T Knöpfle
6
, O Kochetov
15
, V N Kornoukhov
5
, P Krause
10
, V V Kuzminov
5
, M Laubenstein
4
, B Lehnert
18
, M Lindner
6
, I Lippi
9
, A Lubashevskiy
15
, B Lubsandorzhiev
5
, G Lutter
17
, C Macolino
13
, B Majorovits
11
, W Maneschg
6
, L Manzanillas
11
, G Marshall
1
, M Miloradovic
2
, R Mingazheva
2
, M Misiaszek
19
, M Morella
14
, Y Müller
2
, I Nemchenok
15
, M Neuberger
10
, L Pandola
20
, K Pelczar
17
, L Pertoldi
10
9
, P Piseri
21
, A Pullia
21
, C Ransom
2
, L Rauscher
16
, M Redchuk
9
, S Riboldi
21
, N Rumyantseva
15
3
, C Sada
8
9
, S Sailer
6
, F Salamida
13
, S Schönert
10
, J Schreiner
6
, M Schütt
6
, A-K Schütz
16
, O Schulz
11
, M Schwarz
10
, B Schwingenheuer
6
, O Selivanenko
5
, E Shevchik
15
, M Shirchenko
15
, L Shtembari
11
, H Simgen
6
, A Smolnikov
15
6
, D Stukov
3
, S Sullivan
6
, A A Vasenko
7
, A Veresnikova
5
, C Vignoli
4
, K von Sturm
8
9
, T Wester
18
, C Wiesinger
10
, M Wojcik
19
, E Yanovich
5
, B Zatschler
18
, I Zhitnikov
15
, S V Zhukov
3
, D Zinatulina
15
, A Zschocke
16
, A J Zsigmond
11
, K Zuber
18
, G Zuzel
19
; GERDA Collaboration
Affiliations
Affiliations
- 1 Department of Physics and Astronomy, University College London, London, United Kingdom.
- 2 Physik-Institut, Universität Zürich, Zurich, Switzerland.
- 3 National Research Centre "Kurchatov Institute," Moscow, Russia.
- 4 INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy.
- 5 Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia.
- 6 Max-Planck-Institut für Kernphysik, Heidelberg, Germany.
- 7 Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," Moscow, Russia.
- 8 Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy.
- 9 INFN Padova, Padua, Italy.
- 10 Physik Department, Technische Universität München, Germany.
- 11 Max-Planck-Institut für Physik, Munich, Germany.
- 12 INFN Milano Bicocca, Milan, Italy.
- 13 INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, L'Aquila, Italy.
- 14 INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy.
- 15 Joint Institute for Nuclear Research, Dubna, Russia.
- 16 Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany.
- 17 European Commission, JRC-Geel, Geel, Belgium.
- 18 Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany.
- 19 Institute of Physics, Jagiellonian University, Cracow, Poland.
- 20 INFN Laboratori Nazionali del Sud, Catania, Italy.
- 21 Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy.
- PMID: 37862664
- DOI: 10.1103/PhysRevLett.131.142501
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Final Results of GERDA on the Two-Neutrino Double-β Decay Half-Life of ^{76}Ge
M Agostini et al.
Phys Rev Lett.
.
Display options
Format
doi: 10.1103/PhysRevLett.131.142501.
Authors
M Agostini
1
, A Alexander
1
, G R Araujo
2
, A M Bakalyarov
3
, M Balata
4
, I Barabanov
5
, L Baudis
2
, C Bauer
6
, S Belogurov
5
7
, A Bettini
8
9
, L Bezrukov
5
, V Biancacci
8
9
, E Bossio
10
, V Bothe
6
, R Brugnera
8
9
, A Caldwell
11
, S Calgaro
8
9
, C Cattadori
12
, A Chernogorov
7
3
, P-J Chiu
2
, T Comellato
10
, V D'Andrea
13
, E V Demidova
7
, A Di Giacinto
4
, N Di Marco
14
, E Doroshkevich
5
, F Fischer
11
, M Fomina
15
, A Gangapshev
6
5
, A Garfagnini
8
9
, C Gooch
11
, P Grabmayr
16
, V Gurentsov
5
, K Gusev
15
3
10
, S Hackenmüller
6
, S Hemmer
9
, W Hofmann
6
, J Huang
2
, M Hult
17
, L V Inzhechik
5
, J Janicskó Csáthy
10
, J Jochum
16
, M Junker
4
, V Kazalov
5
, Y Kermaïdic
6
, H Khushbakht
16
, T Kihm
6
, K Kilgus
16
, I V Kirpichnikov
7
, A Klimenko
15
6
, K T Knöpfle
6
, O Kochetov
15
, V N Kornoukhov
5
, P Krause
10
, V V Kuzminov
5
, M Laubenstein
4
, B Lehnert
18
, M Lindner
6
, I Lippi
9
, A Lubashevskiy
15
, B Lubsandorzhiev
5
, G Lutter
17
, C Macolino
13
, B Majorovits
11
, W Maneschg
6
, L Manzanillas
11
, G Marshall
1
, M Miloradovic
2
, R Mingazheva
2
, M Misiaszek
19
, M Morella
14
, Y Müller
2
, I Nemchenok
15
, M Neuberger
10
, L Pandola
20
, K Pelczar
17
, L Pertoldi
10
9
, P Piseri
21
, A Pullia
21
, C Ransom
2
, L Rauscher
16
, M Redchuk
9
, S Riboldi
21
, N Rumyantseva
15
3
, C Sada
8
9
, S Sailer
6
, F Salamida
13
, S Schönert
10
, J Schreiner
6
, M Schütt
6
, A-K Schütz
16
, O Schulz
11
, M Schwarz
10
, B Schwingenheuer
6
, O Selivanenko
5
, E Shevchik
15
, M Shirchenko
15
, L Shtembari
11
, H Simgen
6
, A Smolnikov
15
6
, D Stukov
3
, S Sullivan
6
, A A Vasenko
7
, A Veresnikova
5
, C Vignoli
4
, K von Sturm
8
9
, T Wester
18
, C Wiesinger
10
, M Wojcik
19
, E Yanovich
5
, B Zatschler
18
, I Zhitnikov
15
, S V Zhukov
3
, D Zinatulina
15
, A Zschocke
16
, A J Zsigmond
11
, K Zuber
18
, G Zuzel
19
; GERDA Collaboration
Affiliations
- 1 Department of Physics and Astronomy, University College London, London, United Kingdom.
- 2 Physik-Institut, Universität Zürich, Zurich, Switzerland.
- 3 National Research Centre "Kurchatov Institute," Moscow, Russia.
- 4 INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy.
- 5 Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia.
- 6 Max-Planck-Institut für Kernphysik, Heidelberg, Germany.
- 7 Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," Moscow, Russia.
- 8 Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy.
- 9 INFN Padova, Padua, Italy.
- 10 Physik Department, Technische Universität München, Germany.
- 11 Max-Planck-Institut für Physik, Munich, Germany.
- 12 INFN Milano Bicocca, Milan, Italy.
- 13 INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, L'Aquila, Italy.
- 14 INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy.
- 15 Joint Institute for Nuclear Research, Dubna, Russia.
- 16 Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany.
- 17 European Commission, JRC-Geel, Geel, Belgium.
- 18 Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany.
- 19 Institute of Physics, Jagiellonian University, Cracow, Poland.
- 20 INFN Laboratori Nazionali del Sud, Catania, Italy.
- 21 Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy.
- PMID: 37862664
- DOI: 10.1103/PhysRevLett.131.142501
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Abstract
We present the measurement of the two-neutrino double-β decay rate of ^{76}Ge 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: T_{1/2}^{2ν}=(2.022±0.018_{stat}±0.038_{syst})×10^{21} yr. This is the most precise determination of the ^{76}Ge 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: M_{eff}^{2ν}=(0.101±0.001).
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