A Measurement of atmospheric neutrino oscillation parameters by SUPER-KAMIOKANDE I

We present a combined analysis of fully-contained, partially-contained and upward-going muon atmospheric neutrino data from a 1489 day exposure of the Super--Kamiokande detector. The data samples span roughly five decades in neutrino energy, from 100 MeV to 10 TeV. A detailed Monte Carlo comparison is described and presented. The data is fit to the Monte Carlo expectation, and is found to be consistent with neutrino oscillations of

\nu_\mu \leftrightarrow \nu_\tau

with

\sin^22\theta > 0.92

and

1.5\times 10^{-3} < \Delta m^2 < 3.4\times 10^{-3}{\rm eV}^2

at 90% confidence level.

Note:

32 pages, 44 figures. As accepted for publication in Physical Review D

14.60.Pq
96.40.Tv
neutrino: cosmic radiation
neutrino: atmosphere
neutrino: energy spectrum
neutrino: oscillation
neutrino/mu
neutrino/tau
neutrino nucleon: interaction
charged current

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