Addressing neutrino mixing models with DUNE and T2HK

• Published in: The European physical journal. C, Particles and fields Particles and fields, 2018-04, Vol.78 (4), p.1-16, Article 286
• Main Authors: Agarwalla, Sanjib Kumar, Chatterjee, Sabya Sachi, Petcov, S. T., Titov, A. V.
• Format: Article
• Language: English
• Subjects: Astronomy; Astrophysics and Cosmology; CP violation; Elementary Particles; Hadrons; Heavy Ions; Mathematical analysis; Matrix methods; Measurement Science and Instrumentation; Neutrinos; Nuclear Energy; Nuclear Physics; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Regular Article - Theoretical Physics; String Theory; Symmetry
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-018-5772-6

We consider schemes of neutrino mixing arising within the discrete symmetry approach to the well-known flavour problem. We concentrate on 3 ν mixing schemes in which the cosine of the Dirac CP violation phase δ CP satisfies a sum rule by which it is expressed in terms of three neutrino mixing angles θ 12 , θ 23 , and θ 13 , and a fixed real angle θ 12 ν , whose value depends on the employed discrete symmetry and its breaking. We consider five underlying symmetry forms of the neutrino mixing matrix: bimaximal (BM), tri-bimaximal (TBM), golden ratio A (GRA) and B (GRB), and hexagonal (HG). For each symmetry form, the sum rule yields specific prediction for cos δ CP for fixed θ 12 , θ 23 , and θ 13 . In the context of the proposed DUNE and T2HK facilities, we study (i) the compatibility of these predictions with present neutrino oscillation data, and (ii) the potential of these experiments to discriminate between various symmetry forms.