Search for neutrinoless double-β decay in Ge76 with 26 kg yr of exposure from the Majorana Demonstrator

doi:10.1103/physrevc.100.025501

Title: Search for neutrinoless double- $β$ decay in ${}^{76}{Ge}$ with 26 kg yr of exposure from the Majorana Demonstrator

Abstract

The Majorana Collaboration is operating an array of high-purity Ge detectors to search for the neutrinoless double-β decay of Ge76. The Majorana Demonstrator consists of 44.1 kg of Ge detectors (29.7 kg enriched to 88% in Ge76) split between two modules constructed from ultraclean materials. Both modules are contained in a low-background shield at the Sanford Underground Research Facility in Lead, South Dakota. We present updated results on the search for neutrinoless double-β decay in Ge76 with 26.0±0.5 kg yr of enriched exposure. With the Demonstrator's energy resolution of 2.53 keV FWHM at Qββ, which is the best among all neutrinoless double-β decay experiments, we observe one event in the region of interest with 0.65 events expected from the estimated background, resulting in a lower limit on the Ge76 neutrinoless double-β decay half-life of 2.7×1025 yr [90% confidence level (CL)] with a median sensitivity of 4.8×1025 yr (90% CL). Depending on the matrix elements used, a 90% CL upper limit on the effective Majorana neutrino mass in the range of 200–433 meV is obtained. The measured background in the configurations with full shielding and optimized grounding is 11.9±2.0 counts/(FWHM t yr).

Authors:: Alvis, S. I.; Arnquist, I. J.; Avignone, F. T.; Barabash, A. S.; Barton, C. J.; Basu, V.; Bertrand, F. E.; Bos, B.; Busch, M.; Buuck, M.; Caldwell, T. S.; Chan, Y-D.; Christofferson, C. D.; Chu, P. -H.; Clark, M.; Cuesta, C.; Detwiler, J. A.; Efremenko, Yu.; Ejiri, H.; Elliott, S. R. more »« less

Publication Date:: 2019-08-23

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of North Carolina, Chapel Hill, NC (United States); Univ. of Tennessee, Knoxville, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

Contributing Org.:: Majorana Collaboration

OSTI Identifier:: 1564073

Alternate Identifier(s):: OSTI ID: 1558732; OSTI ID: 1600645; OSTI ID: 1658866; OSTI ID: 1658939

Grant/Contract Number:: AC02-05CH11231; AC05-00OR22725; AC05-76RL0130; AC52-06NA25396; FG02-97ER41020; FG02-97ER41033; FG02-97ER41041; SC0010254; SC0012612; SC0014445; SC0018060

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C

Additional Journal Information:: Journal Volume: 100; Journal Issue: 2; Journal ID: ISSN 2469-9985

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Double beta decay; Neutrinoless double beta decay; Nuclear structure & decays; 59 ≤ A ≤ 89; Baryon & lepton number symmetries; Spectrometers & spectroscopic techniques

Citation Formats


                    Alvis, S. I., Arnquist, I. J., Avignone, F. T., Barabash, A. S., Barton, C. J., Basu, V., Bertrand, F. E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Clark, M., Cuesta, C., Detwiler, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Gilliss, T., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Hegedus, R. J., Hehn, L., Henning, R., Hervas Aguilar, D., Hoppe, E. W., Howe, M. A., Kidd, M. F., Konovalov, S. I., Kouzes, R. T., Lopez, A. M., Martin, R. D., Massarczyk, R., Meijer, S. J., Mertens, S., Myslik, J., Othman, G., Pettus, W., Piliounis, A., Poon, A. W.  P., Radford, D. C., Rager, J., Reine, A. L., Rielage, K., Ruof, N. W., Shanks, B., Shirchenko, M., Tedeschi, D., Varner, R. L., Vasilyev, S., White, B. R., Wilkerson, J. F., Wiseman, C., Xu, W., Yakushev, E., Yu, C. -H., Yumatov, V., Zhitnikov, I., and Zhu, B. X. Search for neutrinoless double-β decay in Ge76 with 26 kg yr of exposure from the Majorana Demonstrator.  United States: N. p., 2019. 
        Web.  doi:10.1103/physrevc.100.025501.

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                    Alvis, S. I., Arnquist, I. J., Avignone, F. T., Barabash, A. S., Barton, C. J., Basu, V., Bertrand, F. E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Clark, M., Cuesta, C., Detwiler, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Gilliss, T., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Hegedus, R. J., Hehn, L., Henning, R., Hervas Aguilar, D., Hoppe, E. W., Howe, M. A., Kidd, M. F., Konovalov, S. I., Kouzes, R. T., Lopez, A. M., Martin, R. D., Massarczyk, R., Meijer, S. J., Mertens, S., Myslik, J., Othman, G., Pettus, W., Piliounis, A., Poon, A. W.  P., Radford, D. C., Rager, J., Reine, A. L., Rielage, K., Ruof, N. W., Shanks, B., Shirchenko, M., Tedeschi, D., Varner, R. L., Vasilyev, S., White, B. R., Wilkerson, J. F., Wiseman, C., Xu, W., Yakushev, E., Yu, C. -H., Yumatov, V., Zhitnikov, I., & Zhu, B. X. Search for neutrinoless double-β decay in Ge76 with 26 kg yr of exposure from the Majorana Demonstrator.  United States.  doi:10.1103/physrevc.100.025501.

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                    Alvis, S. I., Arnquist, I. J., Avignone, F. T., Barabash, A. S., Barton, C. J., Basu, V., Bertrand, F. E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Clark, M., Cuesta, C., Detwiler, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Gilliss, T., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Hegedus, R. J., Hehn, L., Henning, R., Hervas Aguilar, D., Hoppe, E. W., Howe, M. A., Kidd, M. F., Konovalov, S. I., Kouzes, R. T., Lopez, A. M., Martin, R. D., Massarczyk, R., Meijer, S. J., Mertens, S., Myslik, J., Othman, G., Pettus, W., Piliounis, A., Poon, A. W.  P., Radford, D. C., Rager, J., Reine, A. L., Rielage, K., Ruof, N. W., Shanks, B., Shirchenko, M., Tedeschi, D., Varner, R. L., Vasilyev, S., White, B. R., Wilkerson, J. F., Wiseman, C., Xu, W., Yakushev, E., Yu, C. -H., Yumatov, V., Zhitnikov, I., and Zhu, B. X. Fri .  
        "Search for neutrinoless double-β decay in Ge76 with 26 kg yr of exposure from the Majorana Demonstrator".  United States.  doi:10.1103/physrevc.100.025501.  https://www.osti.gov/servlets/purl/1564073.

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@article{osti_1564073,

  title        = {Search for neutrinoless double-β decay in Ge76 with 26 kg yr of exposure from the Majorana Demonstrator},

  author       = {Alvis, S. I. and Arnquist, I. J. and Avignone, F. T. and Barabash, A. S. and Barton, C. J. and Basu, V. and Bertrand, F. E. and Bos, B. and Busch, M. and Buuck, M. and Caldwell, T. S. and Chan, Y-D. and Christofferson, C. D. and Chu, P. -H. and Clark, M. and Cuesta, C. and Detwiler, J. A. and Efremenko, Yu. and Ejiri, H. and Elliott, S. R. and Gilliss, T. and Giovanetti, G. K. and Green, M. P. and Gruszko, J. and Guinn, I. S. and Guiseppe, V. E. and Haufe, C. R. and Hegedus, R. J. and Hehn, L. and Henning, R. and Hervas Aguilar, D. and Hoppe, E. W. and Howe, M. A. and Kidd, M. F. and Konovalov, S. I. and Kouzes, R. T. and Lopez, A. M. and Martin, R. D. and Massarczyk, R. and Meijer, S. J. and Mertens, S. and Myslik, J. and Othman, G. and Pettus, W. and Piliounis, A. and Poon, A. W.  P. and Radford, D. C. and Rager, J. and Reine, A. L. and Rielage, K. and Ruof, N. W. and Shanks, B. and Shirchenko, M. and Tedeschi, D. and Varner, R. L. and Vasilyev, S. and White, B. R. and Wilkerson, J. F. and Wiseman, C. and Xu, W. and Yakushev, E. and Yu, C. -H. and Yumatov, V. and Zhitnikov, I. and Zhu, B. X.},

  abstractNote = {The Majorana Collaboration is operating an array of high-purity Ge detectors to search for the neutrinoless double-β decay of Ge76. The Majorana Demonstrator consists of 44.1 kg of Ge detectors (29.7 kg enriched to 88% in Ge76) split between two modules constructed from ultraclean materials. Both modules are contained in a low-background shield at the Sanford Underground Research Facility in Lead, South Dakota. We present updated results on the search for neutrinoless double-β decay in Ge76 with 26.0±0.5 kg yr of enriched exposure. With the Demonstrator's energy resolution of 2.53 keV FWHM at Qββ, which is the best among all neutrinoless double-β decay experiments, we observe one event in the region of interest with 0.65 events expected from the estimated background, resulting in a lower limit on the Ge76 neutrinoless double-β decay half-life of 2.7×1025 yr [90% confidence level (CL)] with a median sensitivity of 4.8×1025 yr (90% CL). Depending on the matrix elements used, a 90% CL upper limit on the effective Majorana neutrino mass in the range of 200–433 meV is obtained. The measured background in the configurations with full shielding and optimized grounding is 11.9±2.0 counts/(FWHM t yr).},

  doi          = {10.1103/physrevc.100.025501},

  journal      = {Physical Review C},

  number       = 2,

  volume       = 100,

  place        = {United States},

  year         = {2019},

  month        = {8}

}

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DOI: 10.1103/PhysRevLett.120.211804
Search for Neutrinoless Double-ß Decay in 76Ge with the Majorana Demonstrator

Journal Article Aalseth, Craig E. ; Abgrall, N ; Aguayo, Estanislao ; ... - Physical Review Letters

The Majorana Collaboration is operating an array of high purity Ge detectors to search for neutrinoless double-beta decay in 76Ge. The Majorana Demonstrator is comprised of 44.8 kg (29.7 kg enriched in 76Ge) of Ge detectors in total, split between two modules contained in a low background shield at the Sanford Underground Research Facility in Lead, South Dakota. Here we present results from data taken during construction, commissioning, and the start of full operations. Given the unprecedented energy resolution at Q of 2.5 keV FWHM and the very low background with no observed candidate events in 10 kg yr ofmore »« less
DOI: 10.1103/PhysRevLett.120.132502
First Results from CUORE: A Search for Lepton Number Violation via $0 ν β β$ Decay of ${}^{130}{Te}$

Journal Article Alduino, C. ; Alessandria, F. ; Alfonso, K. ; ... - Physical Review Letters

The CUORE experiment, a ton-scale cryogenic bolometer array, recently began operation at the Laboratori Nazionali del Gran Sasso in Italy. The array represents a significant advancement in this technology, and in this work we apply it for the first time to a high-sensitivity search for a lepton-number-violating process: ¹³⁰Te neutrinoless double-beta decay. Examining a total TeO₂ exposure of 86.3 kg yr, characterized by an effective energy resolution of (7.7 ± 0.5) keV FWHM and a background in the region of interest of (0.014 ± 0.002) counts /(keV kg yr), we find no evidence for neutrinoless double-beta decay. Including systematic uncertainties, we place a lower limit on the decay half-life of Tmore »« less
Cited by 48
DOI: 10.1103/PhysRevLett.120.132501

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Title: Search for neutrinoless double- β decay in Ge 76 with 26 kg yr of exposure from the Majorana Demonstrator

Abstract

Citation Formats

Disassembling the nuclear matrix elements of the neutrinoless ββ decay journal, March 2009

Determining the drift time of charge carriers in p-type point-contact HPGe detectors journal, June 2012

Neutrinoless double- β decay in SU(2)×U(1) theories journal, June 1982

The Majorana Parts Tracking Database journal, April 2015

Systematic study of nuclear matrix elements in neutrinoless double- β decay with a beyond-mean-field covariant density functional theory journal, February 2015

First Limit on the Direct Detection of Lightly Ionizing Particles for Electric Charge as Low as e / 1000 with the Majorana Demonstrator journal, May 2018

Neutrino-Less Double beta Decay and Particle Physics journal, September 2011

Double beta decay, Majorana neutrinos, and neutrino mass journal, April 2008

The MAJORANA DEMONSTRATOR Neutrinoless Double-Beta Decay Experiment journal, January 2014

Currents to Conductors Induced by a Moving Point Charge journal, October 1938

Low Background Signal Readout Electronics for the Majorana Demonstrator journal, May 2015

New Limits on Bosonic Dark Matter, Solar Axions, Pauli Exclusion Principle Violation, and Electron Decay from the Majorana Demonstrator journal, April 2017

Status and future of nuclear matrix elements for neutrinoless double-beta decay: a review journal, March 2017

Multisite event discrimination for the majorana demonstrator journal, June 2019

The processing of enriched germanium for the Majorana Demonstrator and R&D for a next generation double-beta decay experiment journal, January 2018

Large plastic scintillator panels with WLS fiber readout: Optimization of components journal, September 2014

Neutrinoless Double Beta Decay: 2015 Review journal, January 2016

Search for Neutrinoless Double- β Decay in Ge 76 with the Majorana Demonstrator journal, March 2018

The Majorana Demonstrator calibration system journal, November 2017

Large-mass ultralow noise germanium detectors: performance and applications in neutrino and astroparticle physics journal, September 2007

Global constraints on absolute neutrino masses and their ordering journal, May 2017

Double beta decay experiments journal, July 2011

Ionization Yield of Radiations. II. The Fluctuations of the Number of Ions journal, July 1947

Currents Induced by Electron Motion journal, September 1939

Recent Progress in Double beta Decay journal, March 2012

Low capacitance large volume shaped-field germanium detector journal, January 1989

0 ν β β and 2 ν β β nuclear matrix elements, quasiparticle random-phase approximation, and isospin symmetry restoration journal, April 2013

Experimental searches of neutrinoless double beta decay journal, April 2013

Colloquium : Majorana fermions in nuclear, particle, and solid-state physics journal, February 2015

Nuclear matrix elements for 0 ν β β decays with light or heavy Majorana-neutrino exchange journal, February 2015

Main features of detectors and isotopes to investigate double beta decay with increased sensitivity journal, March 2018

MaGe-a Geant4-Based Monte Carlo Application Framework for Low-Background Germanium Experiments journal, June 2011

Neutrinoless double beta decay and neutrino mass journal, November 2016

Status and prospects of searches for neutrinoless double beta decay: Status and prospects of searches for neutrinoless double beta decay journal, January 2013

Shape and Pairing Fluctuation Effects on Neutrinoless Double Beta Decay Nuclear Matrix Elements journal, September 2013

Determination of the G 76 e Double Beta Decay Q Value journal, May 2001

0 ν β β and 2 ν β β nuclear matrix elements in the interacting boson model with isospin restoration journal, March 2015

Digital synthesis of pulse shapes in real time for high resolution radiation spectroscopy journal, June 1994

GRETINA: A gamma ray energy tracking array journal, December 2004

Delayed charge recovery discrimination of passivated surface alpha events in P-type point-contact detectors journal, September 2017

Discovery probability of next-generation neutrinoless double- β decay experiments journal, September 2017

Search for trinucleon decay in the Majorana Demonstrator journal, April 2019

Shell model predictions for Sn 124 double- β decay journal, February 2016

Data Acquisition and Trigger System of the Gamma Ray Energy Tracking In-Beam Nuclear Array (GRETINA) journal, February 2009

Phase-space factors for double- β decay journal, March 2012

Geant4—a simulation toolkit journal, July 2003

Q values of the 76Ge and 100Mo double-beta decays journal, April 2008

The Majorana Demonstrator radioassay program journal, August 2016

Unified approach to the classical statistical analysis of small signals journal, April 1998

Current status of neutrinoless double-beta decay searches journal, November 2016

The Sanford Underground Research Facility at Homestake journal, May 2015

Theory of neutrinoless double-beta decay journal, September 2012

The Sanford Underground Research Facility at Homestake conference, January 2015

Light majoron cold dark matter from topological defects and the formation of boson stars journal, September 2019

Empirical inference on the Majorana mass of the ordinary neutrinos journal, October 2019

Title: Search for neutrinoless double- $β$ decay in ${}^{76}{Ge}$ with 26 kg yr of exposure from the Majorana Demonstrator

Disassembling the nuclear matrix elements of the neutrinoless ββ decay
journal, March 2009

Determining the drift time of charge carriers in p-type point-contact HPGe detectors
journal, June 2012

Neutrinoless double- $β$ decay in SU(2)×U(1) theories
journal, June 1982

The Majorana Parts Tracking Database
journal, April 2015

Systematic study of nuclear matrix elements in neutrinoless double- $β$ decay with a beyond-mean-field covariant density functional theory
journal, February 2015

First Limit on the Direct Detection of Lightly Ionizing Particles for Electric Charge as Low as $e / 1000$ with the Majorana Demonstrator
journal, May 2018

Neutrino-Less Double beta Decay and Particle Physics
journal, September 2011

Double beta decay, Majorana neutrinos, and neutrino mass
journal, April 2008

The MAJORANA DEMONSTRATOR Neutrinoless Double-Beta Decay Experiment
journal, January 2014

Currents to Conductors Induced by a Moving Point Charge
journal, October 1938

Low Background Signal Readout Electronics for the Majorana Demonstrator
journal, May 2015

New Limits on Bosonic Dark Matter, Solar Axions, Pauli Exclusion Principle Violation, and Electron Decay from the Majorana Demonstrator
journal, April 2017

Status and future of nuclear matrix elements for neutrinoless double-beta decay: a review
journal, March 2017

Multisite event discrimination for the majorana demonstrator
journal, June 2019

The processing of enriched germanium for the Majorana Demonstrator and R&D for a next generation double-beta decay experiment
journal, January 2018

Large plastic scintillator panels with WLS fiber readout: Optimization of components
journal, September 2014

Neutrinoless Double Beta Decay: 2015 Review
journal, January 2016

Search for Neutrinoless Double- $β$ Decay in ${}^{76}{Ge}$ with the Majorana Demonstrator
journal, March 2018

The Majorana Demonstrator calibration system
journal, November 2017

Large-mass ultralow noise germanium detectors: performance and applications in neutrino and astroparticle physics
journal, September 2007

Global constraints on absolute neutrino masses and their ordering
journal, May 2017

Double beta decay experiments
journal, July 2011

Ionization Yield of Radiations. II. The Fluctuations of the Number of Ions
journal, July 1947

Currents Induced by Electron Motion
journal, September 1939

Recent Progress in Double beta Decay
journal, March 2012

Low capacitance large volume shaped-field germanium detector
journal, January 1989

$0 ν β β$ and $2 ν β β$ nuclear matrix elements, quasiparticle random-phase approximation, and isospin symmetry restoration
journal, April 2013

Experimental searches of neutrinoless double beta decay
journal, April 2013

Colloquium : Majorana fermions in nuclear, particle, and solid-state physics
journal, February 2015

Nuclear matrix elements for $0 ν β β$ decays with light or heavy Majorana-neutrino exchange
journal, February 2015

Main features of detectors and isotopes to investigate double beta decay with increased sensitivity
journal, March 2018

MaGe-a Geant4-Based Monte Carlo Application Framework for Low-Background Germanium Experiments
journal, June 2011

Neutrinoless double beta decay and neutrino mass
journal, November 2016

Status and prospects of searches for neutrinoless double beta decay: Status and prospects of searches for neutrinoless double beta decay
journal, January 2013

Shape and Pairing Fluctuation Effects on Neutrinoless Double Beta Decay Nuclear Matrix Elements
journal, September 2013

Determination of the ${}^{76}G e$ Double Beta Decay $Q$ Value
journal, May 2001

$0 ν β β$ and $2 ν β β$ nuclear matrix elements in the interacting boson model with isospin restoration
journal, March 2015

Digital synthesis of pulse shapes in real time for high resolution radiation spectroscopy
journal, June 1994

GRETINA: A gamma ray energy tracking array
journal, December 2004

Delayed charge recovery discrimination of passivated surface alpha events in P-type point-contact detectors
journal, September 2017

Discovery probability of next-generation neutrinoless double- $β$ decay experiments
journal, September 2017

Search for trinucleon decay in the Majorana Demonstrator
journal, April 2019

Shell model predictions for ${}^{124}{Sn}$ double- $β$ decay
journal, February 2016

Data Acquisition and Trigger System of the Gamma Ray Energy Tracking In-Beam Nuclear Array (GRETINA)
journal, February 2009

Phase-space factors for double- $β$ decay
journal, March 2012

Geant4—a simulation toolkit
journal, July 2003

Q values of the 76Ge and 100Mo double-beta decays
journal, April 2008

The Majorana Demonstrator radioassay program
journal, August 2016

Unified approach to the classical statistical analysis of small signals
journal, April 1998

Current status of neutrinoless double-beta decay searches
journal, November 2016

The Sanford Underground Research Facility at Homestake
journal, May 2015

Theory of neutrinoless double-beta decay
journal, September 2012

The Sanford Underground Research Facility at Homestake
conference, January 2015

Light majoron cold dark matter from topological defects and the formation of boson stars
journal, September 2019

Empirical inference on the Majorana mass of the ordinary neutrinos
journal, October 2019