First MINOS Results from the NuMI Beam

Abstract

As of December 2005, the MINOS long-baseline neutrino oscillation experiment collected data with an exposure of $0.93\times 10^{20}$ protons on target. Preliminary analysis of these data reveals a result inconsistent with a no-oscillation hypothesis at level of 5.8 sigma. The data are consistent with neutrino oscillations reported by Super-Kamiokande and K2K, with best fit parameters of $\Delta m_{23}^2=3.05_{-0.55}^{+0.60}\times 10^{-}3$ and ${\sin }^{2}2{\theta }_{23}=0.88_{-0.15}^{+0.12}$.

Flavor Physics & CP Violation Conference, Vancouver, 2006 5 pages, 5 figures

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