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Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam.
Abe, K; Andreopoulos, C; Antonova, M; Aoki, S; Ariga, A; Assylbekov, S; Autiero, D; Barbi, M; Barker, G J; Barr, G; Bartet-Friburg, P; Batkiewicz, M; Bay, F; Berardi, V; Berkman, S; Bhadra, S; Blondel, A; Bolognesi, S; Bordoni, S; Boyd, S B; Brailsford, D; Bravar, A; Bronner, C; Buizza Avanzini, M; Calland, R G; Cao, S; Caravaca Rodríguez, J; Cartwright, S L; Castillo, R; Catanesi, M G; Cervera, A; Cherdack, D; Chikuma, N; Christodoulou, G; Clifton, A; Coleman, J; Collazuol, G; Cremonesi, L; Dabrowska, A; De Rosa, G; Dealtry, T; Denner, P F; Dennis, S R; Densham, C; Dewhurst, D; Di Lodovico, F; Di Luise, S; Dolan, S; Drapier, O; Duffy, K E.
Affiliation
  • Abe K; University of Tokyo, Institute for Cosmic Ray Research, Kamioka Observatory, Kamioka, Japan.
  • Andreopoulos C; University of Liverpool, Department of Physics, Liverpool, United Kingdom.
  • Antonova M; STFC, Rutherford Appleton Laboratory, Harwell Oxford, and Daresbury Laboratory, Warrington, United Kingdom.
  • Aoki S; Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia.
  • Ariga A; Kobe University, Kobe, Japan.
  • Assylbekov S; University of Bern, Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics (LHEP), Bern, Switzerland.
  • Autiero D; Colorado State University, Department of Physics, Fort Collins, Colorado, USA.
  • Barbi M; Université de Lyon, Université Claude Bernard Lyon 1, IPN Lyon (IN2P3), Villeurbanne, France.
  • Barker GJ; University of Regina, Department of Physics, Regina, Saskatchewan, Canada.
  • Barr G; University of Warwick, Department of Physics, Coventry, United Kingdom.
  • Bartet-Friburg P; Oxford University, Department of Physics, Oxford, United Kingdom.
  • Batkiewicz M; UPMC, Université Paris Diderot, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Paris, France.
  • Bay F; H. Niewodniczanski Institute of Nuclear Physics PAN, Cracow, Poland.
  • Berardi V; ETH Zurich, Institute for Particle Physics, Zurich, Switzerland.
  • Berkman S; INFN Sezione di Bari and Università e Politecnico di Bari, Dipartimento Interuniversitario di Fisica, Bari, Italy.
  • Bhadra S; University of British Columbia, Department of Physics and Astronomy, Vancouver, British Columbia, Canada.
  • Blondel A; York University, Department of Physics and Astronomy, Toronto, Ontario, Canada.
  • Bolognesi S; University of Geneva, Section de Physique, DPNC, Geneva, Switzerland.
  • Bordoni S; IRFU, CEA Saclay, Gif-sur-Yvette, France.
  • Boyd SB; Institut de Fisica d'Altes Energies (IFAE), Barcelona Institute of Science and Technology, Campus UAB, Bellaterra (Barcelona), Spain.
  • Brailsford D; University of Warwick, Department of Physics, Coventry, United Kingdom.
  • Bravar A; Imperial College London, Department of Physics, London, United Kingdom.
  • Bronner C; Lancaster University, Physics Department, Lancaster, United Kingdom.
  • Buizza Avanzini M; University of Geneva, Section de Physique, DPNC, Geneva, Switzerland.
  • Calland RG; Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba, Japan.
  • Cao S; Ecole Polytechnique, IN2P3-CNRS, Laboratoire Leprince-Ringuet, Palaiseau, France.
  • Caravaca Rodríguez J; Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo Institutes for Advanced Study, University of Tokyo, Kashiwa, Chiba, Japan.
  • Cartwright SL; Kyoto University, Department of Physics, Kyoto, Japan.
  • Castillo R; Institut de Fisica d'Altes Energies (IFAE), Barcelona Institute of Science and Technology, Campus UAB, Bellaterra (Barcelona), Spain.
  • Catanesi MG; University of Sheffield, Department of Physics and Astronomy, Sheffield, United Kingdom.
  • Cervera A; Institut de Fisica d'Altes Energies (IFAE), Barcelona Institute of Science and Technology, Campus UAB, Bellaterra (Barcelona), Spain.
  • Cherdack D; INFN Sezione di Bari and Università e Politecnico di Bari, Dipartimento Interuniversitario di Fisica, Bari, Italy.
  • Chikuma N; IFIC (CSIC and University of Valencia), Valencia, Spain.
  • Christodoulou G; Colorado State University, Department of Physics, Fort Collins, Colorado, USA.
  • Clifton A; University of Tokyo, Department of Physics, Tokyo, Japan.
  • Coleman J; University of Liverpool, Department of Physics, Liverpool, United Kingdom.
  • Collazuol G; Colorado State University, Department of Physics, Fort Collins, Colorado, USA.
  • Cremonesi L; University of Liverpool, Department of Physics, Liverpool, United Kingdom.
  • Dabrowska A; INFN Sezione di Padova and Università di Padova, Dipartimento di Fisica, Padova, Italy.
  • De Rosa G; Queen Mary University of London, School of Physics and Astronomy, London, United Kingdom.
  • Dealtry T; H. Niewodniczanski Institute of Nuclear Physics PAN, Cracow, Poland.
  • Denner PF; INFN Sezione di Napoli and Università di Napoli, Dipartimento di Fisica, Napoli, Italy.
  • Dennis SR; Lancaster University, Physics Department, Lancaster, United Kingdom.
  • Densham C; University of Warwick, Department of Physics, Coventry, United Kingdom.
  • Dewhurst D; University of Liverpool, Department of Physics, Liverpool, United Kingdom.
  • Di Lodovico F; STFC, Rutherford Appleton Laboratory, Harwell Oxford, and Daresbury Laboratory, Warrington, United Kingdom.
  • Di Luise S; Oxford University, Department of Physics, Oxford, United Kingdom.
  • Dolan S; Queen Mary University of London, School of Physics and Astronomy, London, United Kingdom.
  • Drapier O; ETH Zurich, Institute for Particle Physics, Zurich, Switzerland.
  • Duffy KE; Oxford University, Department of Physics, Oxford, United Kingdom.
Phys Rev Lett ; 116(18): 181801, 2016 May 06.
Article in En | MEDLINE | ID: mdl-27203315
ABSTRACT
T2K reports its first measurements of the parameters governing the disappearance of ν[over ¯]_{µ} in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic ν[over ¯]_{µ} beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the ν[over ¯]_{µ} survival probability is expected to be minimal. Using a data set corresponding to 4.01×10^{20} protons on target, 34 fully contained µ-like events were observed. The best-fit oscillation parameters are sin^{2}(θ[over ¯]_{23})=0.45 and |Δm[over ¯]_{32}^{2}|=2.51×10^{-3} eV^{2} with 68% confidence intervals of 0.38-0.64 and 2.26-2.80×10^{-3} eV^{2}, respectively. These results are in agreement with existing antineutrino parameter measurements and also with the ν_{µ} disappearance parameters measured by T2K.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2016 Type: Article Affiliation country: Japan
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2016 Type: Article Affiliation country: Japan