image disappearance at the SPL, T2K-I, NOνA and the neutrino factory Original Research Article

We study the measurement of the atmospheric neutrino oscillation parameters, image and image, at the image disappearance channel at three conventional beam facilities, the SPL, T2K-phase I and NOνA. These two parameters have been shown to be of crucial importance in the measurement of two of the unknowns of the PMNS mixing matrix, image and the leptonic CP-violating phase δ. In our analysis, the effect of the two discrete ambiguities, image and image, is explicitly taken into account. We analyse also the image disappearance channel at the neutrino factory, and combine it with the “golden” image and “silver” image appearance channels to study its impact on the measurement of image and δ. Eventually, we present the sensitivity of the four facilities to different observables: image, δ, maximal image, the sign of the atmospheric mass difference, image, and the image-octant, image.