Nonzero θ13 and CP violation from broken μ _ τ symmetry

Conference of Theoretical Physics and Nonlinear Phenomena 2014: "From Universe to String's Scale"

Damanik, Asan^1

Faculty of Science and Technology, Sanata Dharma University, Kampus III USD, Paingan, Maguwoharjo, Sleman, Yogyakarta, Indonesia^1

关键词: Complex parameter;    CP violations;    Dirac phase;    Mixing angle;    Neutrino mass matrix;    Neutrino physics;    The standard model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/539/1/012012/pdf
DOI  :  10.1088/1742-6596/539/1/012012

来源: IOP

【 摘 要 】

Nonzero and relatively large of θ13mixing angle has some phenomenological consequences on neutrino physics beyond the standard model. One of the consequences if the mixing angle θ13≠ 0 is the possibility of the CP violation on the neutrino sector. In order to obtain nonzero θ13mixing angle, we break the neutrino mass matrix that obey μ-τ symmetry by introducing a complex parameter and determine the Jarlskog invariant as a measure of CP violation existence. By using the experimental data θ12and θ23as input, we can determine the Dirac phase δ as function of mixing angle θ13.