Search for Neutrinoless Double-β Decay in ^{76}Ge with the Majorana Demonstrator.

Autor: Aalseth CE; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Abgrall N; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Aguayo E; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Alvis SI; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Amman M; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Arnquist IJ; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Avignone FT; Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA.; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA., Back HO; Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA.; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA., Barabash AS; National Research Center 'Kurchatov Institute' Institute for Theoretical and Experimental Physics, Moscow, 117218 Russia., Barbeau PS; Department of Physics, University of Chicago, Chicago, Illinois 60637, USA., Barton CJ; Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA., Barton PJ; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Bertrand FE; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA., Bode T; Max-Planck-Institut für Physik, München, 80805 Germany., Bos B; South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA., Boswell M; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Bradley AW; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Brodzinski RL; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Brudanin V; Joint Institute for Nuclear Research, Dubna, 141980 Russia., Busch M; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics, Duke University, Durham, North Carolina 27708, USA., Buuck M; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Caldwell AS; South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA., Caldwell TS; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Chan YD; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Christofferson CD; South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA., Chu PH; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Collar JI; Department of Physics, University of Chicago, Chicago, Illinois 60637, USA., Combs DC; Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA.; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA., Cooper RJ; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA., Cuesta C; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Detwiler JA; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Doe PJ; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Dunmore JA; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Efremenko Y; Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA., Ejiri H; Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan., Elliott SR; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Fast JE; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Finnerty P; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Fraenkle FM; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Fu Z; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Fujikawa BK; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Fuller E; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Galindo-Uribarri A; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA., Gehman VM; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Gilliss T; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Giovanetti GK; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA.; Department of Physics, Princeton University, Princeton, New Jersey 08544, USA., Goett J; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Green MP; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.; Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA.; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Gruszko J; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Guinn IS; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Guiseppe VE; Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA.; Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA.; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Hallin AL; Centre for Particle Physics, University of Alberta, Edmonton, Alberta T6G 2E1, Canada., Haufe CR; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Hehn L; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Henning R; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Hoppe EW; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Hossbach TW; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Howe MA; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Jasinski BR; Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA., Johnson RA; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Keeter KJ; Department of Physics, Black Hills State University, Spearfish, South Dakota 57799, USA., Kephart JD; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Kidd MF; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.; Tennessee Tech University, Cookeville, Tennessee 38505, USA., Knecht A; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Konovalov SI; National Research Center 'Kurchatov Institute' Institute for Theoretical and Experimental Physics, Moscow, 117218 Russia., Kouzes RT; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., LaFerriere BD; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Leon J; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Lesko KT; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.; Department of Physics, University of California, Berkeley, California 94720, USA., Leviner LE; Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA.; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA., Loach JC; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.; Shanghai Jiao Tong University, Shanghai 200240, China., Lopez AM; Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA., Luke PN; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., MacMullin J; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., MacMullin S; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Marino MG; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Martin RD; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.; Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada., Massarczyk R; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., McDonald AB; Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada., Mei DM; Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA.; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Meijer SJ; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Merriman JH; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Mertens S; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.; Max-Planck-Institut für Physik, München, 80805 Germany.; Physik Department and Excellence Cluster Universe, Technische Universität, München, 85748 Germany., Miley HS; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Miller ML; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Myslik J; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Orrell JL; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., O'Shaughnessy C; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Othman G; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Overman NR; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Perumpilly G; Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA., Pettus W; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Phillips DG; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Poon AWP; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Pushkin K; Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA., Radford DC; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA., Rager J; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Reeves JH; Pacific Northwest National Laboratory, Richland, Washington 99354, USA., Reine AL; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Rielage K; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Robertson RGH; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Ronquest MC; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Ruof NW; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Schubert AG; Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA., Shanks B; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Shirchenko M; Joint Institute for Nuclear Research, Dubna, 141980 Russia., Snavely KJ; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Snyder N; Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA., Steele D; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Suriano AM; South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA., Tedeschi D; Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA., Tornow W; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics, Duke University, Durham, North Carolina 27708, USA., Trimble JE; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Varner RL; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA., Vasilyev S; Joint Institute for Nuclear Research, Dubna, 141980 Russia.; Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37916, USA., Vetter K; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.; Department of Nuclear Engineering, University of California, Berkeley, California 94720, USA., Vorren K; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., White BR; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Wilkerson JF; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Wiseman C; Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA., Xu W; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.; Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA.; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.; Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27514, USA., Yakushev E; Joint Institute for Nuclear Research, Dubna, 141980 Russia., Yaver H; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA., Young AR; Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA.; Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA., Yu CH; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA., Yumatov V; National Research Center 'Kurchatov Institute' Institute for Theoretical and Experimental Physics, Moscow, 117218 Russia., Zhitnikov I; Joint Institute for Nuclear Research, Dubna, 141980 Russia., Zhu BX; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA., Zimmermann S; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2018 Mar 30; Vol. 120 (13), pp. 132502.
DOI: 10.1103/PhysRevLett.120.132502
Abstrakt: The Majorana Collaboration is operating an array of high purity Ge detectors to search for neutrinoless double-β decay in ^{76}Ge. The Majorana Demonstrator comprises 44.1 kg of Ge detectors (29.7 kg enriched in ^{76}Ge) 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. 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_{-2.5}^{+3.1}  counts/(FWHM t yr).
Databáze: MEDLINE