Decisive disappearance search at highΔm2with monoenergetic muon neutrinos

Decisive disappearance search at high m[superscript 2] with monoenergetic muon neutrinos

Search for Sterile Neutrinos Mixing with Muon Neutrinos in MINOS.

We report results of a search for oscillations involving a light sterile neutrino over distances of 1.04 and 735 km in a ν_{μ}-dominated beam with a peak energy of 3 GeV. The data, from an exposure of 10.56×10^{20} protons on target, are analyzed using a phenomenological model with one sterile neutrino. We constrain the mixing parameters θ_{24} and Δm_{41}^{2} and set limits on parameters of th...

A search for muon neutrino and antineutrino disappearance in MiniBooNE

The MiniBooNE Collaboration reports a search for νμ and ν̄μ disappearance in the ∆m 2 region of a few eV . These measurements are important for constraining models with extra types of neutrinos, extra dimensions and CPT violation. Fits to the shape of the νμ and ν̄μ energy spectra reveal no evidence for disappearance at 90% confidence level (CL) in either mode. This is the first test of ν̄μ disapp...

Search for muon neutrino and antineutrino disappearance in MiniBooNE.

The MiniBooNE Collaboration reports a search for nu_{micro} and nu[over]_{micro} disappearance in the Deltam;{2} region of 0.5-40 eV;{2}. These measurements are important for constraining models with extra types of neutrinos, extra dimensions, and CPT violation. Fits to the shape of the nu_{micro} and nu[over]_{micro} energy spectra reveal no evidence for disappearance at the 90% confidence lev...

First direct observation of muon antineutrino disappearance.

This Letter reports the first direct observation of muon antineutrino disappearance. The MINOS experiment has taken data with an accelerator beam optimized for ν(μ) production, accumulating an exposure of 1.71 × 10²⁰ protons on target. In the Far Detector, 97 charged current ν(μ) events are observed. The no-oscillation hypothesis predicts 156 events and is excluded at 6.3σ. The best fit to osci...