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Search for Active-Sterile Antineutrino Mixing Using Neutral-Current Interactions with the NOvA Experiment.
Acero, M A; Adamson, P; Aliaga, L; Anfimov, N; Antoshkin, A; Arrieta-Diaz, E; Asquith, L; Aurisano, A; Back, A; Backhouse, C; Baird, M; Balashov, N; Baldi, P; Bambah, B A; Bashar, S; Bays, K; Bernstein, R; Bhatnagar, V; Bhuyan, B; Bian, J; Blair, J; Booth, A C; Bowles, R; Bromberg, C; Buchanan, N; Butkevich, A; Calvez, S; Carroll, T J; Catano-Mur, E; Choudhary, B C; Christensen, A; Coan, T E; Colo, M; Cremonesi, L; Davies, G S; Derwent, P F; Ding, P; Djurcic, Z; Dolce, M; Doyle, D; Dueñas Tonguino, D; Dukes, E C; Duyang, H; Edayath, S; Ehrlich, R; Elkins, M; Ewart, E; Feldman, G J; Filip, P; Franc, J.
Affiliation
  • Acero MA; Universidad del Atlantico, Carrera 30 No. 8-49, Puerto Colombia, Atlantico, Colombia.
  • Adamson P; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Aliaga L; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, 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.
  • Arrieta-Diaz E; Universidad del Magdalena, Carrera 32 No 22 - 08 Santa Marta, Colombia.
  • Asquith L; Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom.
  • Aurisano A; Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA.
  • Back A; Indiana University, Bloomington, Indiana 47405, USA.
  • Backhouse C; Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
  • Baird M; Physics and Astronomy Department, University College London, Gower Street, London WC1E 6BT, United Kingdom.
  • Balashov N; Indiana University, Bloomington, Indiana 47405, USA.
  • Baldi P; Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom.
  • Bambah BA; Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA.
  • Bashar S; Joint Institute for Nuclear Research, Dubna, Moscow region 141980, Russia.
  • Bays K; Department of Physics and Astronomy, University of California at Irvine, Irvine, California 92697, USA.
  • Bernstein R; School of Physics, University of Hyderabad, Hyderabad, 500 046, India.
  • Bhatnagar V; Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155, USA.
  • Bhuyan B; California Institute of Technology, Pasadena, California 91125, USA.
  • Bian J; Illinois Institute of Technology, Chicago Illinois 60616, USA.
  • Blair J; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Booth AC; Department of Physics, Panjab University, Chandigarh, 160 014, India.
  • Bowles R; Department of Physics, IIT Guwahati, Guwahati, 781 039, India.
  • Bromberg C; Department of Physics and Astronomy, University of California at Irvine, Irvine, California 92697, USA.
  • Buchanan N; School of Physics and Astronomy, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, USA.
  • Butkevich A; Department of Physics, University of Houston, Houston, Texas 77204, USA.
  • Calvez S; Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom.
  • Carroll TJ; Indiana University, Bloomington, Indiana 47405, USA.
  • Catano-Mur E; Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
  • Choudhary BC; Department of Physics, Colorado State University, Fort Collins, Colorado 80523-1875, USA.
  • Christensen A; Institute for Nuclear Research of Russia, Academy of Sciences 7a, 60th October Anniversary prospect, Moscow 117312, Russia.
  • Coan TE; Department of Physics, Colorado State University, Fort Collins, Colorado 80523-1875, USA.
  • Colo M; Department of Physics, University of Texas at Austin, Austin, Texas 78712, USA.
  • Cremonesi L; Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
  • Davies GS; Department of Physics, William and Mary, Williamsburg, Virginia 23187, USA.
  • Derwent PF; Department of Physics and Astrophysics, University of Delhi, Delhi 110007, India.
  • Ding P; Department of Physics, Colorado State University, Fort Collins, Colorado 80523-1875, USA.
  • Djurcic Z; Department of Physics, Southern Methodist University, Dallas, Texas 75275, USA.
  • Dolce M; Department of Physics, William and Mary, Williamsburg, Virginia 23187, USA.
  • Doyle D; School of Physics and Astronomy, Queen Mary University of London, London E1 4NS, United Kingdom.
  • Dueñas Tonguino D; Physics and Astronomy Department, University College London, Gower Street, London WC1E 6BT, United Kingdom.
  • Dukes EC; Indiana University, Bloomington, Indiana 47405, USA.
  • Duyang H; University of Mississippi, University, Mississippi 38677, USA.
  • Edayath S; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Ehrlich R; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Elkins M; Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Ewart E; Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155, USA.
  • Feldman GJ; Department of Physics, Colorado State University, Fort Collins, Colorado 80523-1875, USA.
  • Filip P; Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA.
  • Franc J; Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA.
Phys Rev Lett ; 127(20): 201801, 2021 Nov 12.
Article in En | MEDLINE | ID: mdl-34860065
This Letter reports results from the first long-baseline search for sterile antineutrinos mixing in an accelerator-based antineutrino-dominated beam. The rate of neutral-current interactions in the two NOvA detectors, at distances of 1 and 810 km from the beam source, is analyzed using an exposure of 12.51×10^{20} protons-on-target from the NuMI beam at Fermilab running in antineutrino mode. A total of 121 of neutral-current candidates are observed at the far detector, compared to a prediction of 122±11(stat.)±15(syst.) assuming mixing only between three active flavors. No evidence for ν[over ¯]_{µ}→ν[over ¯]_{s} oscillation is observed. Interpreting this result within a 3+1 model, constraints are placed on the mixing angles θ_{24}<25° and θ_{34}<32° at the 90% C.L. for 0.05 eV^{2}≤Δm_{41}^{2}≤0.5 eV^{2}, the range of mass splittings that produces no significant oscillations at the near detector. These are the first 3+1 confidence limits set using long-baseline accelerator antineutrinos.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Type of study: Prognostic_studies Language: En Journal: Phys Rev Lett Year: 2021 Document type: Article Affiliation country: Colombia Country of publication: United States
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Full text: 1 Collection: 01-internacional Database: MEDLINE Type of study: Prognostic_studies Language: En Journal: Phys Rev Lett Year: 2021 Document type: Article Affiliation country: Colombia Country of publication: United States