4.8 Article

Search for Differences in Oscillation Parameters for Atmospheric Neutrinos and Antineutrinos at Super-Kamiokande

Journal

PHYSICAL REVIEW LETTERS
Volume 107, Issue 24, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.241801

Keywords

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Funding

  1. Japanese Ministry of Education, Culture, Sports, Science and Technology
  2. United States Department of Energy
  3. U.S. National Science Foundation
  4. Korean Research Foundation
  5. Korea Research Foundation (MOEHRD) [KRF-2008-521-c00072]
  6. State Committee for Scientific Research in Poland [1757/B/H03/2008/35]
  7. National Natural Science Foundation of China [10875062, 10911140109]
  8. Direct For Mathematical & Physical Scien
  9. Division Of Physics [0901048] Funding Source: National Science Foundation
  10. Grants-in-Aid for Scientific Research [23340062, 23340056, 19104005] Funding Source: KAKEN

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We present a search for differences in the oscillations of antineutrinos and neutrinos in the Super-Kamiokande-I, -II, and -III atmospheric neutrino sample. Under a two-flavor disappearance model with separate mixing parameters between neutrinos and antineutrinos, we find no evidence for a difference in oscillation parameters. Best-fit antineutrino mixing is found to be at (Delta(m) over bar (2), sin(2)2 (theta) over bar) = (2.0 x 10(-3) eV(2), 1.0) and is consistent with the overall Super- K measurement.

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