On the impact of systematical uncertainties for the CP violation measurement in superbeam experiments

Understand

Superbeam experiments can, in principle, achieve impressive sensitivities for CP violation in neutrino oscillations for large $\theta_{13}$.

• We study how those sensitivities depend on assumptions about systematical uncertainties.
• We focus on the second phase of T2K, the so-called T2HK experiment, and we explicitly include a near detector in the analysis.
• Our main result is that even an idealised near detector cannot remove the dependence on systematical uncertainties completely.