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Title: Search for Neutrinoless Double- β Decay in Ge 76 with the Majorana Demonstrator

The Majorana Collaboration is operating an array of high purity Ge detectors to search for neutrinoless double-β decay in 76Ge. The Majorana Demonstrator comprises 44.1 kg of Ge detectors (29.7 kg enriched in 76Ge) split between two modules contained in a low background shield at the Sanford Underground Research Facility in Lead, South Dakota. In this paper, we present results from data taken during construction, commissioning, and the start of full operations. We achieve unprecedented energy resolution of 2.5 keV FWHM at Q ββ and a very low background with no observed candidate events in 9.95 kg yr of enriched Ge exposure, resulting in a lower limit on the half-life of 1.9 × 10 25 yr (90% C.L.). This result constrains the effective Majorana neutrino mass to below 240-520 meV, depending on the matrix elements used. In our experimental configuration with the lowest background, the background is 4.0$$+3.1\atop{-2.5}$$ counts/(FWHM t yr).
Authors:
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Publication Date:
Report Number(s):
LA-UR-17-29977
Journal ID: ISSN 0031-9007; PRLTAO; ark:/13030/qt0p03r70b
Grant/Contract Number:
AC02-05CH11231; AC52-06NA25396; FG02-97ER41041; FG02-97ER41033; FG02-97ER41042; SC0012612; FG02-10ER41715; SC0010254; FG02-97ER41020; AC05-00OR22725; MRI-0923142; PHY-0855314; PHY-0919270; PHY-1003399; PHY-1003940; PHY-1102292; PHY-1202950; PHY-1206314; PHY-1619611; PHY-7194299; 15-02-02919
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 13; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF); Russian Foundation for Basic Research; Sanford Underground Research Facility (SURF)
Contributing Orgs:
Majorana Collaboration
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; double beta decay; neutrinoless double beta decay; nuclear structure and decays; Baryon and lepton number symmetries; Atomic and Nuclear Physics
OSTI Identifier:
1438362
Alternate Identifier(s):
OSTI ID: 1429567; OSTI ID: 1436672; OSTI ID: 1454385

Aalseth, C. E., Abgrall, N., Aguayo, E., Alvis, S. I., Amman, M., Arnquist, I. J., Avignone, F. T., Back, H. O., Barabash, A. S., Barbeau, P. S., Barton, C. J., Barton, P. J., Bertrand, F. E., Bode, T., Bos, B., Boswell, M., Bradley, A. W., Brodzinski, R. L., Brudanin, V., Busch, M., Buuck, M., Caldwell, A. S., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Collar, J. I., Combs, D. C., Cooper, R. J., Cuesta, C., Detwiler, J. A., Doe, P. J., Dunmore, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Fast, J. E., Finnerty, P., Fraenkle, F. M., Fu, Z., Fujikawa, B. K., Fuller, E., Galindo-Uribarri, A., Gehman, V. M., Gilliss, T., Giovanetti, G. K., Goett, J., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Hallin, A. L., Haufe, C. R., Hehn, L., Henning, R., Hoppe, E. W., Hossbach, T. W., Howe, M. A., Jasinski, B. R., Johnson, R. A., Keeter, K. J., Kephart, J. D., Kidd, M. F., Knecht, A., Konovalov, S. I., Kouzes, R. T., LaFerriere, B. D., Leon, J., Lesko, K. T., Leviner, L. E., Loach, J. C., Lopez, A. M., Luke, P. N., MacMullin, J., MacMullin, S., Marino, M. G., Martin, R. D., Massarczyk, R., McDonald, A. B., Mei, D. -M., Meijer, S. J., Merriman, J. H., Mertens, S., Miley, H. S., Miller, M. L., Myslik, J., Orrell, J. L., O’Shaughnessy, C., Othman, G., Overman, N. R., Perumpilly, G., Pettus, W., Phillips, D. G., Poon, A. W. P., Pushkin, K., Radford, D. C., Rager, J., Reeves, J. H., Reine, A. L., Rielage, K., Robertson, R. G. H., Ronquest, M. C., Ruof, N. W., Schubert, A. G., Shanks, B., Shirchenko, M., Snavely, K. J., Snyder, N., Steele, D., Suriano, A. M., Tedeschi, D., Tornow, W., Trimble, J. E., Varner, R. L., Vasilyev, S., Vetter, K., Vorren, K., White, B. R., Wilkerson, J. F., Wiseman, C., Xu, W., Yakushev, E., Yaver, H., Young, A. R., Yu, C. -H., Yumatov, V., Zhitnikov, I., Zhu, B. X., and Zimmermann, S.. Search for Neutrinoless Double- β Decay in Ge76 with the Majorana Demonstrator. United States: N. p., Web. doi:10.1103/PhysRevLett.120.132502.
Aalseth, C. E., Abgrall, N., Aguayo, E., Alvis, S. I., Amman, M., Arnquist, I. J., Avignone, F. T., Back, H. O., Barabash, A. S., Barbeau, P. S., Barton, C. J., Barton, P. J., Bertrand, F. E., Bode, T., Bos, B., Boswell, M., Bradley, A. W., Brodzinski, R. L., Brudanin, V., Busch, M., Buuck, M., Caldwell, A. S., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Collar, J. I., Combs, D. C., Cooper, R. J., Cuesta, C., Detwiler, J. A., Doe, P. J., Dunmore, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Fast, J. E., Finnerty, P., Fraenkle, F. M., Fu, Z., Fujikawa, B. K., Fuller, E., Galindo-Uribarri, A., Gehman, V. M., Gilliss, T., Giovanetti, G. K., Goett, J., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Hallin, A. L., Haufe, C. R., Hehn, L., Henning, R., Hoppe, E. W., Hossbach, T. W., Howe, M. A., Jasinski, B. R., Johnson, R. A., Keeter, K. J., Kephart, J. D., Kidd, M. F., Knecht, A., Konovalov, S. I., Kouzes, R. T., LaFerriere, B. D., Leon, J., Lesko, K. T., Leviner, L. E., Loach, J. C., Lopez, A. M., Luke, P. N., MacMullin, J., MacMullin, S., Marino, M. G., Martin, R. D., Massarczyk, R., McDonald, A. B., Mei, D. -M., Meijer, S. J., Merriman, J. H., Mertens, S., Miley, H. S., Miller, M. L., Myslik, J., Orrell, J. L., O’Shaughnessy, C., Othman, G., Overman, N. R., Perumpilly, G., Pettus, W., Phillips, D. G., Poon, A. W. P., Pushkin, K., Radford, D. C., Rager, J., Reeves, J. H., Reine, A. L., Rielage, K., Robertson, R. G. H., Ronquest, M. C., Ruof, N. W., Schubert, A. G., Shanks, B., Shirchenko, M., Snavely, K. J., Snyder, N., Steele, D., Suriano, A. M., Tedeschi, D., Tornow, W., Trimble, J. E., Varner, R. L., Vasilyev, S., Vetter, K., Vorren, K., White, B. R., Wilkerson, J. F., Wiseman, C., Xu, W., Yakushev, E., Yaver, H., Young, A. R., Yu, C. -H., Yumatov, V., Zhitnikov, I., Zhu, B. X., & Zimmermann, S.. Search for Neutrinoless Double- β Decay in Ge76 with the Majorana Demonstrator. United States. doi:10.1103/PhysRevLett.120.132502.
Aalseth, C. E., Abgrall, N., Aguayo, E., Alvis, S. I., Amman, M., Arnquist, I. J., Avignone, F. T., Back, H. O., Barabash, A. S., Barbeau, P. S., Barton, C. J., Barton, P. J., Bertrand, F. E., Bode, T., Bos, B., Boswell, M., Bradley, A. W., Brodzinski, R. L., Brudanin, V., Busch, M., Buuck, M., Caldwell, A. S., Caldwell, T. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Collar, J. I., Combs, D. C., Cooper, R. J., Cuesta, C., Detwiler, J. A., Doe, P. J., Dunmore, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Fast, J. E., Finnerty, P., Fraenkle, F. M., Fu, Z., Fujikawa, B. K., Fuller, E., Galindo-Uribarri, A., Gehman, V. M., Gilliss, T., Giovanetti, G. K., Goett, J., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Hallin, A. L., Haufe, C. R., Hehn, L., Henning, R., Hoppe, E. W., Hossbach, T. W., Howe, M. A., Jasinski, B. R., Johnson, R. A., Keeter, K. J., Kephart, J. D., Kidd, M. F., Knecht, A., Konovalov, S. I., Kouzes, R. T., LaFerriere, B. D., Leon, J., Lesko, K. T., Leviner, L. E., Loach, J. C., Lopez, A. M., Luke, P. N., MacMullin, J., MacMullin, S., Marino, M. G., Martin, R. D., Massarczyk, R., McDonald, A. B., Mei, D. -M., Meijer, S. J., Merriman, J. H., Mertens, S., Miley, H. S., Miller, M. L., Myslik, J., Orrell, J. L., O’Shaughnessy, C., Othman, G., Overman, N. R., Perumpilly, G., Pettus, W., Phillips, D. G., Poon, A. W. P., Pushkin, K., Radford, D. C., Rager, J., Reeves, J. H., Reine, A. L., Rielage, K., Robertson, R. G. H., Ronquest, M. C., Ruof, N. W., Schubert, A. G., Shanks, B., Shirchenko, M., Snavely, K. J., Snyder, N., Steele, D., Suriano, A. M., Tedeschi, D., Tornow, W., Trimble, J. E., Varner, R. L., Vasilyev, S., Vetter, K., Vorren, K., White, B. R., Wilkerson, J. F., Wiseman, C., Xu, W., Yakushev, E., Yaver, H., Young, A. R., Yu, C. -H., Yumatov, V., Zhitnikov, I., Zhu, B. X., and Zimmermann, S.. 2018. "Search for Neutrinoless Double- β Decay in Ge76 with the Majorana Demonstrator". United States. doi:10.1103/PhysRevLett.120.132502.
@article{osti_1438362,
title = {Search for Neutrinoless Double- β Decay in Ge76 with the Majorana Demonstrator},
author = {Aalseth, C. E. and Abgrall, N. and Aguayo, E. and Alvis, S. I. and Amman, M. and Arnquist, I. J. and Avignone, F. T. and Back, H. O. and Barabash, A. S. and Barbeau, P. S. and Barton, C. J. and Barton, P. J. and Bertrand, F. E. and Bode, T. and Bos, B. and Boswell, M. and Bradley, A. W. and Brodzinski, R. L. and Brudanin, V. and Busch, M. and Buuck, M. and Caldwell, A. S. and Caldwell, T. S. and Chan, Y-D. and Christofferson, C. D. and Chu, P. -H. and Collar, J. I. and Combs, D. C. and Cooper, R. J. and Cuesta, C. and Detwiler, J. A. and Doe, P. J. and Dunmore, J. A. and Efremenko, Yu. and Ejiri, H. and Elliott, S. R. and Fast, J. E. and Finnerty, P. and Fraenkle, F. M. and Fu, Z. and Fujikawa, B. K. and Fuller, E. and Galindo-Uribarri, A. and Gehman, V. M. and Gilliss, T. and Giovanetti, G. K. and Goett, J. and Green, M. P. and Gruszko, J. and Guinn, I. S. and Guiseppe, V. E. and Hallin, A. L. and Haufe, C. R. and Hehn, L. and Henning, R. and Hoppe, E. W. and Hossbach, T. W. and Howe, M. A. and Jasinski, B. R. and Johnson, R. A. and Keeter, K. J. and Kephart, J. D. and Kidd, M. F. and Knecht, A. and Konovalov, S. I. and Kouzes, R. T. and LaFerriere, B. D. and Leon, J. and Lesko, K. T. and Leviner, L. E. and Loach, J. C. and Lopez, A. M. and Luke, P. N. and MacMullin, J. and MacMullin, S. and Marino, M. G. and Martin, R. D. and Massarczyk, R. and McDonald, A. B. and Mei, D. -M. and Meijer, S. J. and Merriman, J. H. and Mertens, S. and Miley, H. S. and Miller, M. L. and Myslik, J. and Orrell, J. L. and O’Shaughnessy, C. and Othman, G. and Overman, N. R. and Perumpilly, G. and Pettus, W. and Phillips, D. G. and Poon, A. W. P. and Pushkin, K. and Radford, D. C. and Rager, J. and Reeves, J. H. and Reine, A. L. and Rielage, K. and Robertson, R. G. H. and Ronquest, M. C. and Ruof, N. W. and Schubert, A. G. and Shanks, B. and Shirchenko, M. and Snavely, K. J. and Snyder, N. and Steele, D. and Suriano, A. M. and Tedeschi, D. and Tornow, W. and Trimble, J. E. and Varner, R. L. and Vasilyev, S. and Vetter, K. and Vorren, K. and White, B. R. and Wilkerson, J. F. and Wiseman, C. and Xu, W. and Yakushev, E. and Yaver, H. and Young, A. R. and Yu, C. -H. and Yumatov, V. and Zhitnikov, I. and Zhu, B. X. and Zimmermann, S.},
abstractNote = {The Majorana Collaboration is operating an array of high purity Ge detectors to search for neutrinoless double-β decay in 76Ge. The Majorana Demonstrator comprises 44.1 kg of Ge detectors (29.7 kg enriched in 76Ge) split between two modules contained in a low background shield at the Sanford Underground Research Facility in Lead, South Dakota. In this paper, we present results from data taken during construction, commissioning, and the start of full operations. We achieve unprecedented energy resolution of 2.5 keV FWHM at Qββ and a very low background with no observed candidate events in 9.95 kg yr of enriched Ge exposure, resulting in a lower limit on the half-life of 1.9 × 1025 yr (90% C.L.). This result constrains the effective Majorana neutrino mass to below 240-520 meV, depending on the matrix elements used. In our experimental configuration with the lowest background, the background is 4.0$+3.1\atop{-2.5}$ counts/(FWHM t yr).},
doi = {10.1103/PhysRevLett.120.132502},
journal = {Physical Review Letters},
number = 13,
volume = 120,
place = {United States},
year = {2018},
month = {3}
}