Searching for neutrinoless double beta decay with GERDA

M. Agostini; A. M. Bakalyarov; M. Balata; I. Barabanov; L. Baudis; C. Bauer; E. Bellotti; S. Belogurov; A. Bettini; L. Bezrukov; T. Bode; V. Brudanin; R. Brugnera; A. Caldwell; B. Cattadori; A. Chernogorov; V. D'Andrea; E. V. Demidova; N. Di Marco; A. Domula; E. Doroshkevich; V. Egorov; R. Falkenstein; A. Gangapshev; A. Garfagnini; C. Gooch; P. Grabmayr; V. Gurentsov; K. Gusev; J. Hakenmüller; A. Hegai; M. Heisel; S. Hemmer; R. Hiller; W. Hofmann; M. Hult; L. V. Inzhechik; J. Janicsko; J. Jochum Csáthy; M. Junker; V. Kazalov; Y. Kermaidic; T. Kihm; H. V. Kirpichnikov; A. Kirsch; A. Kish; A. Klimenko; R. Kneiβl; K. T. Knöpfle; O. Kochetov; V. N. Kornoukhov; V. V. Kuzminov; M. Laubenstein; A. Lazzaro; V. I. Lebedev; M. Lindner; I. Lippi; A. Lubashevskiy; B. Lubsandorzhiev; G. Lutter; C. Macolino; B. Majorovits; W. Maneschg; M. Miloradovic; R. Mingazheva; M. Misiaszek; P. Moseev; I. Nemchenok; K. Panas; L. Pandola; K. Pelczar; A. Pullia; C. Ransom; S. Riboldi; N. Rumyantseva; C. Sada; F. Salamida; C. Schmitt; B. Schneider; J. Schreiner; O. Schulz; B. Schwingenheuer; S. Schönert; A. K. Schütz; O. Selivanenko; E. Shevchik; M. Shirchenko; H. Simgen; A. Smolnikov; L. Stanco; L. Vanhoefer; A. A. Vasenko; A. Veresnikova; K. Von Sturm; V. Wagner; A. Wegmann; T. Wester; C. Wiesinger; M. Wojcik; E. Yanovich; I. Zhitnikov; S. V. Zhukov; D. Zinatulina; A. J. Zsigmond; K. Zuber; G. Zuzel

doi:10.1088/1742-6596/1342/1/012005

Searching for neutrinoless double beta decay with GERDA

M. Agostini, A. M. Bakalyarov, M. Balata, I. Barabanov, L. Baudis, C. Bauer, E. Bellotti, S. Belogurov, A. Bettini, L. Bezrukov, T. Bode, V. Brudanin, R. Brugnera, A. Caldwell, B. Cattadori, A. Chernogorov, V. D'Andrea, E. V. Demidova, N. Di Marco, A. DomulaE. Doroshkevich, V. Egorov, R. Falkenstein, A. Gangapshev, A. Garfagnini, C. Gooch, P. Grabmayr, V. Gurentsov, K. Gusev, J. Hakenmüller, A. Hegai, M. Heisel, S. Hemmer, R. Hiller, W. Hofmann, M. Hult, L. V. Inzhechik, J. Janicsko, J. Jochum Csáthy, M. Junker, V. Kazalov, Y. Kermaidic, T. Kihm, H. V. Kirpichnikov, A. Kirsch, A. Kish, A. Klimenko, R. Kneiβl, K. T. Knöpfle, O. Kochetov, V. N. Kornoukhov, V. V. Kuzminov, M. Laubenstein, A. Lazzaro, V. I. Lebedev, M. Lindner, I. Lippi, A. Lubashevskiy, B. Lubsandorzhiev, G. Lutter, C. Macolino, B. Majorovits, W. Maneschg, M. Miloradovic, R. Mingazheva, M. Misiaszek, P. Moseev, I. Nemchenok, K. Panas, L. Pandola, K. Pelczar, A. Pullia, C. Ransom, S. Riboldi, N. Rumyantseva, C. Sada, F. Salamida, C. Schmitt, B. Schneider, J. Schreiner, O. Schulz, B. Schwingenheuer, S. Schönert, A. K. Schütz, O. Selivanenko, E. Shevchik, M. Shirchenko, H. Simgen, A. Smolnikov, L. Stanco, L. Vanhoefer, A. A. Vasenko, A. Veresnikova, K. Von Sturm, V. Wagner, A. Wegmann, T. Wester, C. Wiesinger, M. Wojcik, E. Yanovich, I. Zhitnikov, S. V. Zhukov, D. Zinatulina, A. J. Zsigmond, K. Zuber, G. Zuzel

Chair of Experimental Astroparticle Physics

Research output: Contribution to journal › Conference article › peer-review

4 Scopus citations

Abstract

The GERmanium Detector Array (Gerda) experiment located at the INFN Gran Sasso Laboratory (Italy), is looking for the neutrinoless double beta decay of ⁷⁶Ge, by using high-purity germanium detectors made from isotopically enriched material. The combination of the novel experimental design, the careful material selection for radio-purity and the active/passive shielding techniques result in a very low residual background at the Q-value of the decay, about 10^-3 cts/(keV-kg-yr). This makes GERDA the first experiment in the field to be background-free for the complete design exposure of 100 kg-yr. A search for neutrinoless double beta decay was performed with a total exposure of 46.7 kg-yr: 23.2 kg-yr come from the second phase (Phase II) of the experiment, in which the background is reduced by about a factor of ten with respect to the previous phase. The analysis presented in this paper includes 12.4 kg-yr of new Phase II data. No evidence for a possible signal is found: The lower limit for the half-life of ⁷⁶Ge is 8.0 • 10²⁵ yr at 90% CL. The experimental median sensitivity is 5.8 • 10²⁵ yr. The experiment is currently taking data. As it is running in a background-free regime, its sensitivity grows linearly with exposure and it is expected to surpass 10²⁶ yr within 2018.

Original language	English
Article number	012005
Journal	Journal of Physics: Conference Series
Volume	1342
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/1342/1/012005
State	Published - 20 Jan 2020
Event	15th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2017 - Sudbury, Canada Duration: 24 Jun 2017 → 28 Jun 2017

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10.1088/1742-6596/1342/1/012005

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Agostini, M., Bakalyarov, A. M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Bellotti, E., Belogurov, S., Bettini, A., Bezrukov, L., Bode, T., Brudanin, V., Brugnera, R., Caldwell, A., Cattadori, B., Chernogorov, A., D'Andrea, V., Demidova, E. V., Di Marco, N., ... Zuzel, G. (2020). Searching for neutrinoless double beta decay with GERDA. Journal of Physics: Conference Series, 1342(1), Article 012005. https://doi.org/10.1088/1742-6596/1342/1/012005

@article{de35084207b249f48feb0d6f76f01d74,

title = "Searching for neutrinoless double beta decay with GERDA",

abstract = "The GERmanium Detector Array (Gerda) experiment located at the INFN Gran Sasso Laboratory (Italy), is looking for the neutrinoless double beta decay of 76Ge, by using high-purity germanium detectors made from isotopically enriched material. The combination of the novel experimental design, the careful material selection for radio-purity and the active/passive shielding techniques result in a very low residual background at the Q-value of the decay, about 10-3 cts/(keV-kg-yr). This makes GERDA the first experiment in the field to be background-free for the complete design exposure of 100 kg-yr. A search for neutrinoless double beta decay was performed with a total exposure of 46.7 kg-yr: 23.2 kg-yr come from the second phase (Phase II) of the experiment, in which the background is reduced by about a factor of ten with respect to the previous phase. The analysis presented in this paper includes 12.4 kg-yr of new Phase II data. No evidence for a possible signal is found: The lower limit for the half-life of 76Ge is 8.0 • 1025 yr at 90% CL. The experimental median sensitivity is 5.8 • 1025 yr. The experiment is currently taking data. As it is running in a background-free regime, its sensitivity grows linearly with exposure and it is expected to surpass 1026 yr within 2018.",

author = "M. Agostini and Bakalyarov, {A. M.} and M. Balata and I. Barabanov and L. Baudis and C. Bauer and E. Bellotti and S. Belogurov and A. Bettini and L. Bezrukov and T. Bode and V. Brudanin and R. Brugnera and A. Caldwell and B. Cattadori and A. Chernogorov and V. D'Andrea and Demidova, {E. V.} and {Di Marco}, N. and A. Domula and E. Doroshkevich and V. Egorov and R. Falkenstein and A. Gangapshev and A. Garfagnini and C. Gooch and P. Grabmayr and V. Gurentsov and K. Gusev and J. Hakenm{\"u}ller and A. Hegai and M. Heisel and S. Hemmer and R. Hiller and W. Hofmann and M. Hult and Inzhechik, {L. V.} and J. Janicsko and {Jochum Cs{\'a}thy}, J. and M. Junker and V. Kazalov and Y. Kermaidic and T. Kihm and Kirpichnikov, {H. V.} and A. Kirsch and A. Kish and A. Klimenko and R. Kneiβl and Kn{\"o}pfle, {K. T.} and O. Kochetov and Kornoukhov, {V. N.} and Kuzminov, {V. V.} and M. Laubenstein and A. Lazzaro and Lebedev, {V. I.} and M. Lindner and I. Lippi and A. Lubashevskiy and B. Lubsandorzhiev and G. Lutter and C. Macolino and B. Majorovits and W. Maneschg and M. Miloradovic and R. Mingazheva and M. Misiaszek and P. Moseev and I. Nemchenok and K. Panas and L. Pandola and K. Pelczar and A. Pullia and C. Ransom and S. Riboldi and N. Rumyantseva and C. Sada and F. Salamida and C. Schmitt and B. Schneider and J. Schreiner and O. Schulz and B. Schwingenheuer and S. Sch{\"o}nert and Sch{\"u}tz, {A. K.} and O. Selivanenko and E. Shevchik and M. Shirchenko and H. Simgen and A. Smolnikov and L. Stanco and L. Vanhoefer and Vasenko, {A. A.} and A. Veresnikova and {Von Sturm}, K. and V. Wagner and A. Wegmann and T. Wester and C. Wiesinger and M. Wojcik and E. Yanovich and I. Zhitnikov and Zhukov, {S. V.} and D. Zinatulina and Zsigmond, {A. J.} and K. Zuber and G. Zuzel",

note = "Publisher Copyright: {\textcopyright} Published under licence by IOP Publishing Ltd.; 15th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2017 ; Conference date: 24-06-2017 Through 28-06-2017",

year = "2020",

month = jan,

day = "20",

doi = "10.1088/1742-6596/1342/1/012005",

language = "English",

volume = "1342",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "IOP Publishing Ltd.",

number = "1",

}

Agostini, M, Bakalyarov, AM, Balata, M, Barabanov, I, Baudis, L, Bauer, C, Bellotti, E, Belogurov, S, Bettini, A, Bezrukov, L, Bode, T, Brudanin, V, Brugnera, R, Caldwell, A, Cattadori, B, Chernogorov, A, D'Andrea, V, Demidova, EV, Di Marco, N, Domula, A, Doroshkevich, E, Egorov, V, Falkenstein, R, Gangapshev, A, Garfagnini, A, Gooch, C, Grabmayr, P, Gurentsov, V, Gusev, K, Hakenmüller, J, Hegai, A, Heisel, M, Hemmer, S, Hiller, R, Hofmann, W, Hult, M, Inzhechik, LV, Janicsko, J, Jochum Csáthy, J, Junker, M, Kazalov, V, Kermaidic, Y, Kihm, T, Kirpichnikov, HV, Kirsch, A, Kish, A, Klimenko, A, Kneiβl, R, Knöpfle, KT, Kochetov, O, Kornoukhov, VN, Kuzminov, VV, Laubenstein, M, Lazzaro, A, Lebedev, VI, Lindner, M, Lippi, I, Lubashevskiy, A, Lubsandorzhiev, B, Lutter, G, Macolino, C, Majorovits, B, Maneschg, W, Miloradovic, M, Mingazheva, R, Misiaszek, M, Moseev, P, Nemchenok, I, Panas, K, Pandola, L, Pelczar, K, Pullia, A, Ransom, C, Riboldi, S, Rumyantseva, N, Sada, C, Salamida, F, Schmitt, C, Schneider, B, Schreiner, J, Schulz, O, Schwingenheuer, B, Schönert, S, Schütz, AK, Selivanenko, O, Shevchik, E, Shirchenko, M, Simgen, H, Smolnikov, A, Stanco, L, Vanhoefer, L, Vasenko, AA, Veresnikova, A, Von Sturm, K, Wagner, V, Wegmann, A, Wester, T, Wiesinger, C, Wojcik, M, Yanovich, E, Zhitnikov, I, Zhukov, SV, Zinatulina, D, Zsigmond, AJ, Zuber, K & Zuzel, G 2020, 'Searching for neutrinoless double beta decay with GERDA', Journal of Physics: Conference Series, vol. 1342, no. 1, 012005. https://doi.org/10.1088/1742-6596/1342/1/012005

TY - JOUR

T1 - Searching for neutrinoless double beta decay with GERDA

AU - Agostini, M.

AU - Bakalyarov, A. M.

AU - Balata, M.

AU - Barabanov, I.

AU - Baudis, L.

AU - Bauer, C.

AU - Bellotti, E.

AU - Belogurov, S.

AU - Bettini, A.

AU - Bezrukov, L.

AU - Bode, T.

AU - Brudanin, V.

AU - Brugnera, R.

AU - Caldwell, A.

AU - Cattadori, B.

AU - Chernogorov, A.

AU - D'Andrea, V.

AU - Demidova, E. V.

AU - Di Marco, N.

AU - Domula, A.

AU - Doroshkevich, E.

AU - Egorov, V.

AU - Falkenstein, R.

AU - Gangapshev, A.

AU - Garfagnini, A.

AU - Gooch, C.

AU - Grabmayr, P.

AU - Gurentsov, V.

AU - Gusev, K.

AU - Hakenmüller, J.

AU - Hegai, A.

AU - Heisel, M.

AU - Hemmer, S.

AU - Hiller, R.

AU - Hofmann, W.

AU - Hult, M.

AU - Inzhechik, L. V.

AU - Janicsko, J.

AU - Jochum Csáthy, J.

AU - Junker, M.

AU - Kazalov, V.

AU - Kermaidic, Y.

AU - Kihm, T.

AU - Kirpichnikov, H. V.

AU - Kirsch, A.

AU - Kish, A.

AU - Klimenko, A.

AU - Kneiβl, R.

AU - Knöpfle, K. T.

AU - Kochetov, O.

AU - Kornoukhov, V. N.

AU - Kuzminov, V. V.

AU - Laubenstein, M.

AU - Lazzaro, A.

AU - Lebedev, V. I.

AU - Lindner, M.

AU - Lippi, I.

AU - Lubashevskiy, A.

AU - Lubsandorzhiev, B.

AU - Lutter, G.

AU - Macolino, C.

AU - Majorovits, B.

AU - Maneschg, W.

AU - Miloradovic, M.

AU - Mingazheva, R.

AU - Misiaszek, M.

AU - Moseev, P.

AU - Nemchenok, I.

AU - Panas, K.

AU - Pandola, L.

AU - Pelczar, K.

AU - Pullia, A.

AU - Ransom, C.

AU - Riboldi, S.

AU - Rumyantseva, N.

AU - Sada, C.

AU - Salamida, F.

AU - Schmitt, C.

AU - Schneider, B.

AU - Schreiner, J.

AU - Schulz, O.

AU - Schwingenheuer, B.

AU - Schönert, S.

AU - Schütz, A. K.

AU - Selivanenko, O.

AU - Shevchik, E.

AU - Shirchenko, M.

AU - Simgen, H.

AU - Smolnikov, A.

AU - Stanco, L.

AU - Vanhoefer, L.

AU - Vasenko, A. A.

AU - Veresnikova, A.

AU - Von Sturm, K.

AU - Wagner, V.

AU - Wegmann, A.

AU - Wester, T.

AU - Wiesinger, C.

AU - Wojcik, M.

AU - Yanovich, E.

AU - Zhitnikov, I.

AU - Zhukov, S. V.

AU - Zinatulina, D.

AU - Zsigmond, A. J.

AU - Zuber, K.

AU - Zuzel, G.

PY - 2020/1/20

Y1 - 2020/1/20

N2 - The GERmanium Detector Array (Gerda) experiment located at the INFN Gran Sasso Laboratory (Italy), is looking for the neutrinoless double beta decay of 76Ge, by using high-purity germanium detectors made from isotopically enriched material. The combination of the novel experimental design, the careful material selection for radio-purity and the active/passive shielding techniques result in a very low residual background at the Q-value of the decay, about 10-3 cts/(keV-kg-yr). This makes GERDA the first experiment in the field to be background-free for the complete design exposure of 100 kg-yr. A search for neutrinoless double beta decay was performed with a total exposure of 46.7 kg-yr: 23.2 kg-yr come from the second phase (Phase II) of the experiment, in which the background is reduced by about a factor of ten with respect to the previous phase. The analysis presented in this paper includes 12.4 kg-yr of new Phase II data. No evidence for a possible signal is found: The lower limit for the half-life of 76Ge is 8.0 • 1025 yr at 90% CL. The experimental median sensitivity is 5.8 • 1025 yr. The experiment is currently taking data. As it is running in a background-free regime, its sensitivity grows linearly with exposure and it is expected to surpass 1026 yr within 2018.

AB - The GERmanium Detector Array (Gerda) experiment located at the INFN Gran Sasso Laboratory (Italy), is looking for the neutrinoless double beta decay of 76Ge, by using high-purity germanium detectors made from isotopically enriched material. The combination of the novel experimental design, the careful material selection for radio-purity and the active/passive shielding techniques result in a very low residual background at the Q-value of the decay, about 10-3 cts/(keV-kg-yr). This makes GERDA the first experiment in the field to be background-free for the complete design exposure of 100 kg-yr. A search for neutrinoless double beta decay was performed with a total exposure of 46.7 kg-yr: 23.2 kg-yr come from the second phase (Phase II) of the experiment, in which the background is reduced by about a factor of ten with respect to the previous phase. The analysis presented in this paper includes 12.4 kg-yr of new Phase II data. No evidence for a possible signal is found: The lower limit for the half-life of 76Ge is 8.0 • 1025 yr at 90% CL. The experimental median sensitivity is 5.8 • 1025 yr. The experiment is currently taking data. As it is running in a background-free regime, its sensitivity grows linearly with exposure and it is expected to surpass 1026 yr within 2018.

UR - http://www.scopus.com/inward/record.url?scp=85079093595&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1342/1/012005

DO - 10.1088/1742-6596/1342/1/012005

M3 - Conference article

AN - SCOPUS:85079093595

SN - 1742-6588

VL - 1342

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

M1 - 012005

T2 - 15th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2017

Y2 - 24 June 2017 through 28 June 2017

ER -

Searching for neutrinoless double beta decay with GERDA

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