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First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA.
Acero, M A; Adamson, P; Aliaga, L; Alion, T; Allakhverdian, V; Altakarli, S; Anfimov, N; Antoshkin, A; Aurisano, A; Back, A; Backhouse, C; Baird, M; Balashov, N; Baldi, P; Bambah, B A; Bashar, S; Bays, K; Bending, S; Bernstein, R; Bhatnagar, V; Bhuyan, B; Bian, J; Blackburn, T; Blair, J; Booth, A C; Bour, P; Bromberg, C; Buchanan, N; Butkevich, A; Calvez, S; Campbell, M; Carroll, T J; Catano-Mur, E; Cedeno, A; Childress, S; Choudhary, B C; Chowdhury, B; Coan, T E; Colo, M; Cooper, J; Corwin, L; Cremonesi, L; Davies, G S; Derwent, P F; Ding, P; Djurcic, Z; Doyle, D; Dukes, E C; Duyang, H; Edayath, S.
Afiliação
  • Acero MA; Universidad del Atlantico, Km. 7 antigua via a Puerto Colombia, Barranquilla, Colombia.
  • Adamson P; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Aliaga L; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Alion T; Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom.
  • Allakhverdian V; Joint Institute for Nuclear Research, Dubna, Moscow region 141980, Russia.
  • Altakarli S; Department of Mathematics, Statistics, and Physics, Wichita State University, Wichita, Kansas 67206, USA.
  • Anfimov N; Joint Institute for Nuclear Research, Dubna, Moscow region 141980, Russia.
  • Antoshkin A; Joint Institute for Nuclear Research, Dubna, Moscow region 141980, Russia.
  • Aurisano A; Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA.
  • Back A; Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
  • Backhouse C; Physics and Astronomy Dept., University College London, Gower Street, London WC1E 6BT, United Kingdom.
  • Baird M; Indiana University, Bloomington, Indiana 47405, USA.
  • Balashov N; Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom.
  • Baldi P; Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA.
  • Bambah BA; Joint Institute for Nuclear Research, Dubna, Moscow region 141980, Russia.
  • Bashar S; Department of Physics and Astronomy, University of California at Irvine, Irvine, California 92697, USA.
  • Bays K; School of Physics, University of Hyderabad, Hyderabad 500 046, India.
  • Bending S; Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155, USA.
  • Bernstein R; California Institute of Technology, Pasadena, California 91125, USA.
  • Bhatnagar V; Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616, USA.
  • Bhuyan B; Physics and Astronomy Dept., University College London, Gower Street, London WC1E 6BT, United Kingdom.
  • Bian J; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Blackburn T; Department of Physics, Panjab University, Chandigarh 160 014, India.
  • Blair J; Department of Physics, IIT Guwahati, Guwahati 781 039, India.
  • Booth AC; Department of Physics and Astronomy, University of California at Irvine, Irvine, California 92697, USA.
  • Bour P; School of Physics and Astronomy, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, USA.
  • Bromberg C; Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom.
  • Buchanan N; Department of Physics, University of Houston, Houston, Texas 77204, USA.
  • Butkevich A; Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom.
  • Calvez S; Czech Technical University in Prague, Brehova 7, 115 19 Prague 1, Czech Republic.
  • Campbell M; Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
  • Carroll TJ; Department of Physics, Colorado State University, Fort Collins, Colorado 80523-1875, USA.
  • Catano-Mur E; Institute for Nuclear Research of Russia, Academy of Sciences 7a, 60th October Anniversary prospect, Moscow 117312, Russia.
  • Cedeno A; Department of Physics, Colorado State University, Fort Collins, Colorado 80523-1875, USA.
  • Childress S; Physics and Astronomy Dept., University College London, Gower Street, London WC1E 6BT, United Kingdom.
  • Choudhary BC; Department of Physics, University of Texas at Austin, Austin, Texas 78712, USA.
  • Chowdhury B; Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
  • Coan TE; Department of Physics, College of William & Mary, Williamsburg, Virginia 23187, USA.
  • Colo M; Department of Mathematics, Statistics, and Physics, Wichita State University, Wichita, Kansas 67206, USA.
  • Cooper J; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Corwin L; Department of Physics and Astrophysics, University of Delhi, Delhi 110007, India.
  • Cremonesi L; Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA.
  • Davies GS; Department of Physics, Southern Methodist University, Dallas, Texas 75275, USA.
  • Derwent PF; Department of Physics, College of William & Mary, Williamsburg, Virginia 23187, USA.
  • Ding P; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Djurcic Z; South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA.
  • Doyle D; Physics and Astronomy Dept., University College London, Gower Street, London WC1E 6BT, United Kingdom.
  • Dukes EC; Indiana University, Bloomington, Indiana 47405, USA.
  • Duyang H; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Edayath S; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
Phys Rev Lett ; 123(15): 151803, 2019 Oct 11.
Article em En | MEDLINE | ID: mdl-31702305
ABSTRACT
The NOvA experiment has seen a 4.4σ signal of ν[over ¯]_{e} appearance in a 2 GeV ν[over ¯]_{µ} beam at a distance of 810 km. Using 12.33×10^{20} protons on target delivered to the Fermilab NuMI neutrino beamline, the experiment recorded 27 ν[over ¯]_{µ}→ν[over ¯]_{e} candidates with a background of 10.3 and 102 ν[over ¯]_{µ}→ν[over ¯]_{µ} candidates. This new antineutrino data are combined with neutrino data to measure the parameters |Δm_{32}^{2}|=2.48_{-0.06}^{+0.11}×10^{-3} eV^{2}/c^{4} and sin^{2}θ_{23} in the ranges from (0.53-0.60) and (0.45-0.48) in the normal neutrino mass hierarchy. The data exclude most values near δ_{CP}=π/2 for the inverted mass hierarchy by more than 3σ and favor the normal neutrino mass hierarchy by 1.9σ and θ_{23} values in the upper octant by 1.6σ.
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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