Measurement of Neutrino and Antineutrino Oscillations Using Beam and Atmospheric Data in MINOS

Abstract

We report measurements of oscillation parameters from ν_μ and ν_μ disappearance using beam and atmospheric data from MINOS. The data comprise exposures of 10.71×10^(20) protons on target in the ν_μ-dominated beam, 3.36×10^(20) protons on target in the ν_μ-enhanced beam, and 37.88 kton yr of atmospheric neutrinos. Assuming identical ν and ν oscillation parameters, we measure |Δm^2|=(2.41_(-0.10)^(+0.09))×10^(-3)  eV^2 and sin^⁡2(2θ)=0.950_(-0.036)^(+0.035). Allowing independent ν and ν oscillations, we measure antineutrino parameters of |Δm^2|=(2.50_(-0.25)^(+0.23))×10^(-3)  eV^2 and sin^⁡2(2θ)=0.97_(-0.08)^(+0.03), with minimal change to the neutrino parameters.

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