Improved Search for Muon-Neutrino to Electron-Neutrino Oscillations in MINOS Academic Article uri icon

abstract

  • We report the results of a search for ν(e) appearance in a ν(μ) beam in the MINOS long-baseline neutrino experiment. With an improved analysis and an increased exposure of 8.2 × 10(20) protons on the NuMI target at Fermilab, we find that 2 sin(2) (θ(23))sin(2)(2θ(13))<0.12(0.20) at 90% confidence level for δ = 0 and the normal (inverted) neutrino mass hierarchy, with a best-fit of 2sin(2) (θ(23))sin(2)(2θ(13)) = 0.041(-0.031)(+0.047) (0.079(-0.053) (+0.071)). The θ(13) = 0 hypothesis is disfavored by the MINOS data at the 89% confidence level.

author list (cited authors)

  • Adamson, P., Auty, D. J., Ayres, D. S., Backhouse, C., Barr, G., Betancourt, M., ... Zwaska, R.

publication date

  • January 1, 2011 11:11 AM

keywords

  • Minos Collaboration