University of Minnesota
School of Physics & Astronomy
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Gregory Pawloski

Search for muon-neutrino to electron-neutrino transitions in MINOS
MINOS Collaboration, Phys. Rev. Lett.

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This Letter reports on a search for νμ→νe transitions by the MINOS experiment based on a 3.14×1020 protons-on-target exposure in the Fermilab NuMI beam. We observe 35 events in the Far Detector with a background of 27±5(stat)±2(syst) events predicted by the measurements in the Near Detector. If interpreted in terms of νμ→νe oscillations, this 1.5σ excess of events is consistent with sin⁡2(2θ13) comparable to the CHOOZ limit when |Δm2|=2.43×10-3  eV2 and sin⁡2(2θ23)=1.0 are assumed.