2 research outputs found
Measurement of the Neutrino Mass Splitting and Flavor Mixing by MINOS
Measurements of neutrino oscillations using the disappearance of muon
neutrinos from the Fermilab NuMI neutrino beam as observed by the two
MINOS detectors are reported. New analysis methods have been applied to
an enlarged data sample from an exposure of 7.25 x 10(20) protons on
target. A fit to neutrino oscillations yields values of vertical bar
Delta m(2)vertical bar = (2.32(-0.08)(+0.12) x 10(-3) eV(2) for the
atmospheric mass splitting and sin(2)(2 theta) > 0.90 (90% C.L.) for
the mixing angle. Pure neutrino decay and quantum decoherence hypotheses
are excluded at 7 and 9 standard deviations, respectively