A High Statistics Search for Electron-Neutrino --> Tau-Neutrino Oscillations

Details A High Statistics Search for Electron-Neutrino --> Tau-Neutrino Oscillations A High Statistics Search for Electron-Neutrino --> Tau-Neutrino Oscillations

1998-09-21

arxiv.org/abs/hep-ex/9809023v3

Phys.Rev.D59:031101,1999

Physics

High Energy Physics

High Energy Physics - Experiment

submitted to Phys. Rev. D. Rapid Comm

Scientific paper

10.1103/PhysRevD.59.031101

We present new limits on nu_e to nu_tau and nu_e to nu_sterile oscillations by searching for electron neutrino dissappearance in the high-energy wide-band CCFR neutrino beam. Sensitivity to nu_tau appearance comes from tau decay modes in which a large fraction of the energy deposited is electromagnetic. The beam is composed primarily of muon neutrinos but this analysis uses the 2.3% electron neutrino component of the beam. Electron neutrino energies range from 30 to 600 GeV and flight lengths vary from 0.9 to 1.4 km. This limit improves the sensitivity of existing limits and obtains a lowest 90% confidence upper limit in sin**2(2*alpha) of 9.9 x 10**(-2) at delta-m**2 of 125 eV**2.

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