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A Monochromatic Neutrino Beam for U(e3) and CP-Phase

Jose Bernabeu·Catalina Espinoza
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Abstract

The goal for future neutrino facilities is the determination of the $[U_{e3}]$ mixing and CP violation in neutrino oscillations. This will require precision experiments with a very intense neutrino source. Here a novel method to create a monochromatic neutrino beam based on the recent discovery of nuclei that decay fast through electron capture is discussed. The boost of such radioactive ions will generate a monochromatic directional neutrino beam when decaying at high energy in a storage ring with long straight sections. We show that the capacity of such a facility to discover new physics is impressive, so that the principle of energy dependence in the oscillation probability of the $ν_e \to ν_μ$ channel is operational to separate out the two parameters of the mixing $θ_{13}$ and of the CP-violating phase $δ$.

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Jose Bernabeu, Catalina Espinoza. 2006-05-11. A Monochromatic Neutrino Beam for U(e3) and CP-Phase. https://arxiv.org/abs/hep-ph/0605132

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