Measuring leptonic CP violation by low-energy neutrino oscillation experiments

We uncover an interesting phenomenon that neutrino flavor transformation in slowly varying matter density imitates almost exactly that of vacuum neutrino oscillation under suitably chosen experimental parameters. It allows us to have relatively large CP violating measure \Delta P \equiv P(\nu_{\mu} \to \nu_e) - P(\bar{\nu}_{\mu} \to \bar{\nu}_e) which is essentially free from matter effect contamination. We utilize this phenomenon to design a low-energy long-baseline neutrino oscillation experiment to measure the leptonic CP violating phase.

14.60.Pq
25.30.Pt
neutrino: oscillation
vacuum state
neutrino: flavor
MSW effect effect
neutrino: mass difference
mass: hierarchy
neutrino: solar
CP: violation

References(36)

Figures(0)

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CP Violation in the Renormalizable Theory of Weak Interaction

Makoto Kobayashi
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Toshihide Maskawa
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