New constraints on oscillation parameters from v(e) appearance and v(mu) disappearance in the NOvA experiment

We present updated results from the NOvA experiment for ν μ → ν μ and ν μ → ν e oscillations from an exposure of 8.85 × 10 20 protons on target, which represents an increase of 46% compared to our previous publication. The results utilize significant improvements in both the simulations and analysis of the data. A joint fit to the data for ν μ disappearance and ν e appearance gives the best-fit point as normal mass hierarchy, Δ m 2 32 = 2.44 × 10 − 3 eV 2 / c 4 , sin 2 θ 23 = 0.56 , and δ CP = 1.21 π . The 68.3% confidence intervals in the normal mass hierarchy are Δ m 2 32 ∈ [ 2.37 , 2.52 ] × 10 − 3 eV 2 / c 4 , sin 2 θ 23 ∈ [ 0.43 , 0.51 ] ∪ [ 0.52 , 0.60 ] , and δ CP ∈ [ 0 , 0.12 π ] ∪ [ 0.91 π , 2 π ] . The inverted mass hierarchy is disfavored at the 95% confidence level for all choices of the other oscillation parameters