Precision measurements of θ12 for testing models of discrete leptonic flavour symmetries

Topical Research Meeting: Prospects in Neutrino Physics

Ballett, P.^1 ; King, S.F.^2 ; Luhn, C.^3 ; Pascoli, S.^1 ; Schmidt, M.A.^4

IPPP, Department of Physics, Durham University, South Road, Durham

DH1 3LE, United Kingdom^1

School of Physics and Astronomy, University of Southampton, Highfield, Southampton

SO17 1BJ, United Kingdom^2

Theoretische Physik 1, Naturwissenschaftlich-Technische Fakultät, Universität Siegen, Walter-Flex-Straße 3, Siegen

D-57068, Germany^3

ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, University of Melbourne, VIC

3010, Australia^4

关键词: Discrete symmetry;    Long term oscillations;    Mixing matrix;    Mixing parameters;    Neutrino oscillations;    Precision measurement;    Testing models;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/598/1/012014/pdf
DOI  :  10.1088/1742-6596/598/1/012014

来源: IOP

【 摘 要 】

Models of leptonic flavour with discrete symmetries can provide an attractive explanation of the pattern of elements found in the leptonic mixing matrix. The next generation of neutrino oscillation experiments will allow the mixing parameters to be tested to a new level of precision, crucially measuring the CP violating phase δ for the first time. In this contribution, we present results of a systematic survey of the predictions of a class of models based on residual discrete symmetries and the prospects for excluding such models at medium- and long-term oscillation experiments. We place particular emphasis on the complementary role that a future circa 50 km reactor experiment, e.g. JUNO, can play in constraining these models.