Fig. 1: The impact of mass ordering and δCP on event rates.
From: Joint neutrino oscillation analysis from the T2K and NOvA experiments
a,b, A bi-event plot that shows experimental sensitivity to neutrino mass ordering and δCP, with panels representing the NOvA (a) and T2K (b) cases. Black points with 1σ Poisson statistical error bars show the total number of νe and \({\bar{\nu }}_{{\rm{e}}}\) candidates selected in the far detectors. The oval parametric curves trace out predicted numbers of events under the normal (blue) or inverted (orange) mass ordering assumption as the parameter δCP varies from −π to π. Four specific δCP values are labelled for reference. All other oscillation parameters are kept fixed in this graphic, set to their most probable values from the joint analysis (Extended Data Table 3).