We study the distributions of 135 atmospheric neutrino events collected in 420 days of running in a large, deep underground detector. These events come from neutrinos with path lengths ranging from a few kilometers to over 104 kilometers. The average neutrino energy is 920 MeV. No evidence for neutrino oscillations is observed. Flux-independent limits for m2 in the range of 2.2×10-5 to 11.2×10-5 eV2 are set for maximum mixing.
ASJC Scopus subject areas
- Physics and Astronomy(all)