Baseline optimization for the measurement of CP violation, mass hierarchy, and $ heta_{23}$ octant in a long-baseline neutrino oscillation experiment

摘要

Next-generation long-baseline electron neutrino appearance experiments willseek to discover CP violation, determine the mass hierarchy and resolve the$\theta_{23}$ octant. In light of the recent precision measurements of$\theta_{13}$, we consider the sensitivity of these measurements in a study todetermine the optimal baseline, including practical considerations regardingbeam and detector performance. We conclude that a detector at a baseline of atleast 1000 km in a wide-band muon neutrino beam is the optimal configuration.