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Search for Electron Antineutrino Appearance in a Long-Baseline Muon Antineutrino Beam.
Abe, K; Akutsu, R; Ali, A; Alt, C; Andreopoulos, C; Anthony, L; Antonova, M; Aoki, S; Ariga, A; Asada, Y; Ashida, Y; Atkin, E T; Awataguchi, Y; Ban, S; Barbi, M; Barker, G J; Barr, G; Barrow, D; Barry, C; Batkiewicz-Kwasniak, M; Beloshapkin, A; Bench, F; Berardi, V; Berkman, S; Berns, L; Bhadra, S; Bienstock, S; Blondel, A; Bolognesi, S; Bourguille, B; Boyd, S B; Brailsford, D; Bravar, A; Bravo Berguño, D; Bronner, C; Bubak, A; Buizza Avanzini, M; Calcutt, J; Campbell, T; Cao, S; Cartwright, S L; Catanesi, M G; Cervera, A; Chappell, A; Checchia, C; Cherdack, D; Chikuma, N; Christodoulou, G; Coleman, J; Collazuol, G.
Afiliación
  • Abe K; University of Tokyo, Institute for Cosmic Ray Research, Kamioka Observatory, Kamioka, Japan.
  • Akutsu R; University of Tokyo, Institute for Cosmic Ray Research, Research Center for Cosmic Neutrinos, Kashiwa, Japan.
  • Ali A; Kyoto University, Department of Physics, Kyoto, Japan.
  • Alt C; ETH Zurich, Institute for Particle Physics and Astrophysics, Zurich, Switzerland.
  • Andreopoulos C; University of Liverpool, Department of Physics, Liverpool, United Kingdom.
  • Anthony L; STFC, Rutherford Appleton Laboratory, Harwell Oxford, and Daresbury Laboratory, Warrington, United Kingdom.
  • Antonova M; University of Liverpool, Department of Physics, Liverpool, United Kingdom.
  • Aoki S; IFIC (CSIC & University of Valencia), Valencia, Spain.
  • Ariga A; Kobe University, Kobe, Japan.
  • Asada Y; University of Bern, Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics (LHEP), Bern, Switzerland.
  • Ashida Y; Yokohama National University, Faculty of Engineering, Yokohama, Japan.
  • Atkin ET; Kyoto University, Department of Physics, Kyoto, Japan.
  • Awataguchi Y; Imperial College London, Department of Physics, London, United Kingdom.
  • Ban S; Tokyo Metropolitan University, Department of Physics, Tokyo, Japan.
  • Barbi M; Kyoto University, Department of Physics, Kyoto, Japan.
  • Barker GJ; University of Regina, Department of Physics, Regina, Saskatchewan, Canada.
  • Barr G; University of Warwick, Department of Physics, Coventry, United Kingdom.
  • Barrow D; Oxford University, Department of Physics, Oxford, United Kingdom.
  • Barry C; Oxford University, Department of Physics, Oxford, United Kingdom.
  • Batkiewicz-Kwasniak M; University of Liverpool, Department of Physics, Liverpool, United Kingdom.
  • Beloshapkin A; H. Niewodniczanski Institute of Nuclear Physics PAN, Cracow, Poland.
  • Bench F; Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia.
  • Berardi V; University of Liverpool, Department of Physics, Liverpool, United Kingdom.
  • Berkman S; INFN Sezione di Bari and Università e Politecnico di Bari, Dipartimento Interuniversitario di Fisica, Bari, Italy.
  • Berns L; University of British Columbia, Department of Physics and Astronomy, Vancouver, British Columbia, Canada.
  • Bhadra S; TRIUMF, Vancouver, British Columbia, Canada.
  • Bienstock S; Tokyo Institute of Technology, Department of Physics, Tokyo, Japan.
  • Blondel A; York University, Department of Physics and Astronomy, Toronto, Ontario, Canada.
  • Bolognesi S; Sorbonne Université, Université Paris Diderot, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Paris, France.
  • Bourguille B; University of Geneva, Section de Physique, DPNC, Geneva, Switzerland.
  • Boyd SB; Sorbonne Université, Université Paris Diderot, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Paris, France.
  • Brailsford D; IRFU, CEA Saclay, Gif-sur-Yvette, France.
  • Bravar A; Institut de Fisica d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra (Barcelona) Spain.
  • Bravo Berguño D; University of Warwick, Department of Physics, Coventry, United Kingdom.
  • Bronner C; Lancaster University, Physics Department, Lancaster, United Kingdom.
  • Bubak A; University of Geneva, Section de Physique, DPNC, Geneva, Switzerland.
  • Buizza Avanzini M; University Autonoma Madrid, Department of Theoretical Physics, Madrid, Spain.
  • Calcutt J; University of Tokyo, Institute for Cosmic Ray Research, Kamioka Observatory, Kamioka, Japan.
  • Campbell T; University of Silesia, Institute of Physics, Katowice, Poland.
  • Cao S; Ecole Polytechnique, IN2P3-CNRS, Laboratoire Leprince-Ringuet, Palaiseau, France.
  • Cartwright SL; Michigan State University, Department of Physics and Astronomy, East Lansing, Michigan, USA.
  • Catanesi MG; University of Colorado at Boulder, Department of Physics, Boulder, Colorado, USA.
  • Cervera A; High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan.
  • Chappell A; University of Sheffield, Department of Physics and Astronomy, Sheffield, United Kingdom.
  • Checchia C; INFN Sezione di Bari and Università e Politecnico di Bari, Dipartimento Interuniversitario di Fisica, Bari, Italy.
  • Cherdack D; IFIC (CSIC & University of Valencia), Valencia, Spain.
  • Chikuma N; University of Warwick, Department of Physics, Coventry, United Kingdom.
  • Christodoulou G; INFN Sezione di Padova and Università di Padova, Dipartimento di Fisica, Padova, Italy.
  • Coleman J; University of Houston, Department of Physics, Houston, Texas, USA.
  • Collazuol G; University of Tokyo, Department of Physics, Tokyo, Japan.
Phys Rev Lett ; 124(16): 161802, 2020 Apr 24.
Article en En | MEDLINE | ID: mdl-32383902
ABSTRACT
Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. T2K observes 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40σ and no discrepancy between data and PMNS predictions is found. A complementary analysis that introduces an additional free parameter which allows non-PMNS values of electron neutrino and antineutrino appearance also finds no discrepancy between data and PMNS predictions.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2020 Tipo del documento: Article País de afiliación: Japón
Texto completo
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2020 Tipo del documento: Article País de afiliación: Japón