# Neutrino parameters from reactor and accelerator neutrino experiments

Lindner, Manfred (Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany) ; Rodejohann, Werner (Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany) ; Xu, Xun-Jie (Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany)

24 April 2018

Abstract: We revisit correlations of neutrino oscillation parameters in reactor and long-baseline neutrino oscillation experiments. A framework based on an effective value of ${\theta }_{13}$ is presented, which can be used to analytically study the correlations and explain some questions including why and when ${\delta }_{CP}$ has the best fit value of $-\pi /2$, why current and future long-baseline experiments will have less precision of ${\delta }_{CP}$ around $±\pi /2$ than that around zero, etc. Recent hints on the $CP$ phase are then considered from the point of view that different reactor and long-baseline neutrino experiments provide currently different best-fit values of ${\theta }_{13}$ and ${\theta }_{23}$. We point out that the significance of the hints changes for the different available best-fit values.

Published in: Physical Review D 97 (2018)