Global 3 ν oscillation analysis: Status of unknown parameters and future systematic challenges for ORCA and PINGU

• Published in: EPJ Web of Conferences
• Main Authors: CAPOZZI, FRANCESCO, LISI, ELIGIO, MARRONE, ANTONIO
• Other Authors: A. Capone , G. De Bonis , I. Di Palma , C. Perrina, Capozzi, Francesco, Lisi, Eligio, Marrone, Antonio
• Format: Conference Object
• Language: English
• Published: EDP Sciences 2016
• Subjects: Physics and Astronomy (all); Pingu; Orca
• Online Access: http://hdl.handle.net/11586/175523; https://doi.org/10.1051/epjconf/201611611007; http://www.epj-conferences.org/

Within the standard 3ν oscillation framework, we illustrate the status of currently unknown oscillation parameters: the θ23 octant, the mass hierarchy (normal or inverted), and the possible CP-violating phase δ, as derived by a (preliminary) global analysis of oscillation data available in 2015. We then discuss some challenges that will be faced by future, high-statistics analyses of spectral data, starting with one-dimensional energy spectra in reactor experiments, and concluding with two-dimensional energy-angle spectra in large-volume atmospheric experiments. It is shown that systematic uncertainties in the spectral shapes can noticeably affect the prospective sensitivities to unknown oscillation parameters, in particular to the mass hierarchy.