Search for CP and CPT violation effects in neutrino oscillations

Abstract

The present generation of long baseline neutrino experiments, both at accelerators and at reactors, is looking (or it's just going to look) for oscillation signals generated by the mixing parameter θ ₁₃. The knowledge of this angle is a fundamental milestone to optimize further experiments aimed at detecting CP violation in the neutrino sector. Leptonic CP violation is a key phenomenon that has profound implications in particle physics and cosmology but it is clearly out of reach for the aforementioned experiments. Since late 90's, a world-wide activity is in progress to design facilities that can access CP violation in neutrino oscillation and perform high precision measurements of the lepton counterpart of the Cabibbo-Kobayashi-Maskawa matrix. The experimental status of searches or hints for CPT violation in the neutrino sector will be briefly summarized too.

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