Four-Neutrino Analysis of 1.5 km Baseline Reactor Antineutrino Oscillations

Figure 6

The 1𝜎,2𝜎, and 3𝜎 fit of combination of the sin²2𝜃₁₃ and sin²2𝜃₁₄ for chosen values of (Δ𝑚²₃₁ and Δ𝑚²₄₁). For (A), the 𝜒²_min/dof of (0.092,0.049) is 0.51. For (B), the 𝜒²_min/dof of (0.118,0.049) is 0.96. In both cases, the best fit of sin²2𝜃₁₄=0 is included in 1𝜎 region.