Baseline optimization for the measurement of CP violation and mass hierarchy in a long-baseline neutrino oscillation experiment

Next-generation long-baseline electron neutrino appearance experiments will seek 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 to determine the optimal baseline, including practical considerations regarding beam and detector performance, and conclude that a detector at a baseline of at least 1000 km in a wide-band muon neutrino beam is the optimal configuration.