Phys. Rev. D 59, 031101(R) (1998) [5 pages]High statistics search for ve(ve)→vτ(vτ) oscillations
We present new limits on ve(ve)→vτ(vτ) and ve(ve)→vs oscillations by searching for ve disappearance in the high-energy wideband CCFR neutrino beam. Sensitivity to vτ appearance comes from τ decay modes in which a large fraction of the energy deposited is electromagnetic. The beam is composed primarily of vμ(vμ), but this analysis uses the 2.3% ve(ve) 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 for ve→vτ at high Δm2 and obtains a lowest 90% confidence upper limit in sin22α of 9.9×10-2 at Δm2∼125 eV2. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.59.031101
DOI:
10.1103/PhysRevD.59.031101
PACS:
14.60.Pq, 13.15.+g
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