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Search for Neutrinoless Double-ß Decay with the Complete EXO-200 Dataset.
Anton, G; Badhrees, I; Barbeau, P S; Beck, D; Belov, V; Bhatta, T; Breidenbach, M; Brunner, T; Cao, G F; Cen, W R; Chambers, C; Cleveland, B; Coon, M; Craycraft, A; Daniels, T; Danilov, M; Darroch, L; Daugherty, S J; Davis, J; Delaquis, S; Der Mesrobian-Kabakian, A; DeVoe, R; Dilling, J; Dolgolenko, A; Dolinski, M J; Echevers, J; Fairbank, W; Fairbank, D; Farine, J; Feyzbakhsh, S; Fierlinger, P; Fudenberg, D; Gautam, P; Gornea, R; Gratta, G; Hall, C; Hansen, E V; Hoessl, J; Hufschmidt, P; Hughes, M; Iverson, A; Jamil, A; Jessiman, C; Jewell, M J; Johnson, A; Karelin, A; Kaufman, L J; Koffas, T; Krücken, R; Kuchenkov, A.
Afiliação
  • Anton G; Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen 91058, Germany.
  • Badhrees I; Physics Department, Carleton University, Ottawa, Ontario K1S 5B6, Canada.
  • Barbeau PS; Department of Physics, Duke University, and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA.
  • Beck D; Physics Department, University of Illinois, Urbana-Champaign, Illinois 61801, USA.
  • Belov V; Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Center "Kurchatov Institute," 117218 Moscow, Russia.
  • Bhatta T; Department of Physics, University of South Dakota, Vermillion, South Dakota 57069, USA.
  • Breidenbach M; SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
  • Brunner T; Physics Department, McGill University, Montreal H3A 2T8, Quebec, Canada.
  • Cao GF; TRIUMF, Vancouver, British Columbia V6T 2A3, Canada.
  • Cen WR; Institute of High Energy Physics, Beijing 100049, China.
  • Chambers C; Institute of High Energy Physics, Beijing 100049, China.
  • Cleveland B; Physics Department, Colorado State University, Fort Collins, Colorado 80523, USA.
  • Coon M; Department of Physics, Laurentian University, Sudbury, Ontario P3E 2C6, Canada.
  • Craycraft A; Physics Department, University of Illinois, Urbana-Champaign, Illinois 61801, USA.
  • Daniels T; Physics Department, Colorado State University, Fort Collins, Colorado 80523, USA.
  • Danilov M; Department of Physics and Physical Oceanography, University of North Carolina at Wilmington, Wilmington, North Carolina 28403, USA.
  • Darroch L; Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Center "Kurchatov Institute," 117218 Moscow, Russia.
  • Daugherty SJ; Physics Department, McGill University, Montreal H3A 2T8, Quebec, Canada.
  • Davis J; Physics Department and CEEM, Indiana University, Bloomington, Indiana 47405, USA.
  • Delaquis S; SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
  • Der Mesrobian-Kabakian A; SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
  • DeVoe R; Department of Physics, Laurentian University, Sudbury, Ontario P3E 2C6, Canada.
  • Dilling J; Physics Department, Stanford University, Stanford, California 94305, USA.
  • Dolgolenko A; TRIUMF, Vancouver, British Columbia V6T 2A3, Canada.
  • Dolinski MJ; Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Center "Kurchatov Institute," 117218 Moscow, Russia.
  • Echevers J; Department of Physics, Drexel University, Philadelphia, Pennsylvania 19104, USA.
  • Fairbank W; Physics Department, University of Illinois, Urbana-Champaign, Illinois 61801, USA.
  • Fairbank D; Physics Department, Colorado State University, Fort Collins, Colorado 80523, USA.
  • Farine J; Physics Department, Colorado State University, Fort Collins, Colorado 80523, USA.
  • Feyzbakhsh S; Department of Physics, Laurentian University, Sudbury, Ontario P3E 2C6, Canada.
  • Fierlinger P; Amherst Center for Fundamental Interactions and Physics Department, University of Massachusetts, Amherst, Massachusetts 01003, USA.
  • Fudenberg D; Physik Department and Excellence Cluster Universe, Technische Universität München, Garching 80805, Germany.
  • Gautam P; Physics Department, Stanford University, Stanford, California 94305, USA.
  • Gornea R; Department of Physics, Drexel University, Philadelphia, Pennsylvania 19104, USA.
  • Gratta G; Physics Department, Carleton University, Ottawa, Ontario K1S 5B6, Canada.
  • Hall C; TRIUMF, Vancouver, British Columbia V6T 2A3, Canada.
  • Hansen EV; Physics Department, Stanford University, Stanford, California 94305, USA.
  • Hoessl J; Physics Department, University of Maryland, College Park, Maryland 20742, USA.
  • Hufschmidt P; Department of Physics, Drexel University, Philadelphia, Pennsylvania 19104, USA.
  • Hughes M; Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen 91058, Germany.
  • Iverson A; Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen 91058, Germany.
  • Jamil A; Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA.
  • Jessiman C; Physics Department, Colorado State University, Fort Collins, Colorado 80523, USA.
  • Jewell MJ; Wright Laboratory, Department of Physics, Yale University, New Haven, Connecticut 06511, USA.
  • Johnson A; Physics Department, Carleton University, Ottawa, Ontario K1S 5B6, Canada.
  • Karelin A; Physics Department, Stanford University, Stanford, California 94305, USA.
  • Kaufman LJ; SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
  • Koffas T; Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of National Research Center "Kurchatov Institute," 117218 Moscow, Russia.
  • Krücken R; SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
  • Kuchenkov A; Physics Department, Carleton University, Ottawa, Ontario K1S 5B6, Canada.
Phys Rev Lett ; 123(16): 161802, 2019 Oct 18.
Article em En | MEDLINE | ID: mdl-31702371
A search for neutrinoless double-ß decay (0νßß) in ^{136}Xe is performed with the full EXO-200 dataset using a deep neural network to discriminate between 0νßß and background events. Relative to previous analyses, the signal detection efficiency has been raised from 80.8% to 96.4±3.0%, and the energy resolution of the detector at the Q value of ^{136}Xe 0νßß has been improved from σ/E=1.23% to 1.15±0.02% with the upgraded detector. Accounting for the new data, the median 90% confidence level 0νßß half-life sensitivity for this analysis is 5.0×10^{25} yr with a total ^{136}Xe exposure of 234.1 kg yr. No statistically significant evidence for 0νßß is observed, leading to a lower limit on the 0νßß half-life of 3.5×10^{25} yr at the 90% confidence level.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article