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Significant Excess of Electronlike Events in the MiniBooNE Short-Baseline Neutrino Experiment.
Aguilar-Arevalo, A A; Brown, B C; Bugel, L; Cheng, G; Conrad, J M; Cooper, R L; Dharmapalan, R; Diaz, A; Djurcic, Z; Finley, D A; Ford, R; Garcia, F G; Garvey, G T; Grange, J; Huang, E-C; Huelsnitz, W; Ignarra, C; Johnson, R A; Karagiorgi, G; Katori, T; Kobilarcik, T; Louis, W C; Mariani, C; Marsh, W; Mills, G B; Mirabal, J; Monroe, J; Moore, C D; Mousseau, J; Nienaber, P; Nowak, J; Osmanov, B; Pavlovic, Z; Perevalov, D; Ray, H; Roe, B P; Russell, A D; Shaevitz, M H; Spitz, J; Stancu, I; Tayloe, R; Thornton, R T; Tzanov, M; Van de Water, R G; White, D H; Wickremasinghe, D A; Zimmerman, E D.
Afiliação
  • Aguilar-Arevalo AA; Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, CDMX 04510, Mexico.
  • Brown BC; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Bugel L; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Cheng G; Columbia University, New York, New York 10027, USA.
  • Conrad JM; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Cooper RL; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Dharmapalan R; New Mexico State University, Las Cruces, New Mexico 88003, USA.
  • Diaz A; University of Alabama, Tuscaloosa, Alabama 35487, USA.
  • Djurcic Z; Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Finley DA; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Ford R; Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Garcia FG; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Garvey GT; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Grange J; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Huang EC; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Huelsnitz W; University of Florida, Gainesville, Florida 32611, USA.
  • Ignarra C; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Johnson RA; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Karagiorgi G; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Katori T; University of Cincinnati, Cincinnati, Ohio 45221, USA.
  • Kobilarcik T; Columbia University, New York, New York 10027, USA.
  • Louis WC; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Mariani C; Queen Mary University of London, London E1 4NS, United Kingdom.
  • Marsh W; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Mills GB; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Mirabal J; Center for Neutrino Physics, Virginia Tech, Blacksburg, Virginia 24061, USA.
  • Monroe J; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Moore CD; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Mousseau J; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Nienaber P; Royal Holloway, University of London, Egham TW20 0EX, United Kingdom.
  • Nowak J; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Osmanov B; University of Michigan, Ann Arbor, Michigan 48109, USA.
  • Pavlovic Z; Saint Mary's University of Minnesota, Winona, Minnesota 55987, USA.
  • Perevalov D; Lancaster University, Lancaster LA1 4YB, United Kingdom.
  • Ray H; University of Florida, Gainesville, Florida 32611, USA.
  • Roe BP; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Russell AD; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Shaevitz MH; University of Florida, Gainesville, Florida 32611, USA.
  • Spitz J; University of Michigan, Ann Arbor, Michigan 48109, USA.
  • Stancu I; Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
  • Tayloe R; Columbia University, New York, New York 10027, USA.
  • Thornton RT; University of Michigan, Ann Arbor, Michigan 48109, USA.
  • Tzanov M; University of Alabama, Tuscaloosa, Alabama 35487, USA.
  • Van de Water RG; Indiana University, Bloomington, Indiana 47405, USA.
  • White DH; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Wickremasinghe DA; University of Colorado, Boulder, Colorado 80309, USA.
  • Zimmerman ED; Louisiana State University, Baton Rouge, Louisiana 70803, USA.
Phys Rev Lett ; 121(22): 221801, 2018 Nov 30.
Article em En | MEDLINE | ID: mdl-30547637
ABSTRACT
The MiniBooNE experiment at Fermilab reports results from an analysis of ν_{e} appearance data from 12.84×10^{20} protons on target in neutrino mode, an increase of approximately a factor of 2 over previously reported results. A ν_{e} charged-current quasielastic event excess of 381.2±85.2 events (4.5σ) is observed in the energy range 200protons on target in antineutrino mode, a total ν_{e} plus ν[over ¯]_{e} charged-current quasielastic event excess of 460.5±99.0 events (4.7σ) is observed. If interpreted in a two-neutrino oscillation model, ν_{µ}→ν_{e}, the best oscillation fit to the excess has a probability of 21.1%, while the background-only fit has a χ^{2} probability of 6×10^{-7} relative to the best fit. The MiniBooNE data are consistent in energy and magnitude with the excess of events reported by the Liquid Scintillator Neutrino Detector (LSND), and the significance of the combined LSND and MiniBooNE excesses is 6.0σ. A two-neutrino oscillation interpretation of the data would require at least four neutrino types and indicate physics beyond the three neutrino paradigm. Although the data are fit with a two-neutrino oscillation model, other models may provide better fits to the data.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Phys Rev Lett Ano de publicação: 2018 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Phys Rev Lett Ano de publicação: 2018 Tipo de documento: Article