Abstract
MINOS has previously presented antineutrino disappearance results based on its first exposure in dedicated antineutrino beam mode corresponding to 1.7×l020 PoT of accumulated data. Here we present an updated antineutrino disappearance result obtained using 70% more antineutrino data. The best fit antineutrino oscillation parameters, Δm̄223 = 2.62+0.31−0.28 × 10−3 eV2 and sin2(2θ̄23) = 0.95+0.10−0.11(stat) + 0.01(syst) are now in good agreement with those obtained for neutrinos. New results on electron neutrino disappearance extracted using an improved analysis technique and 15% more data are also presented. We obtain 90% confidence limits for normal (inverted) mass hierarchy of sin2(2θ13) < 0.12 (sin2(2θ13) < 0.20).
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