On the measurement of leptonic CP violation

Details On the measurement of leptonic CP violation On the measurement of leptonic CP violation

2001-03-23

arxiv.org/abs/hep-ph/0103258v1

Nucl.Phys.B608:301-318,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 14 figures, uses epsfig

Scientific paper

10.1016/S0550-3213(01)00248-6

We show that the simultaneous determination of the leptonic CP-odd phase $\delta$ and the angle $\theta_{13}$ from the subleading transitions $\nu_e\to\nu_\mu$ and ${\bar\nu}_e\to{\bar\nu}_\mu$ results generically, at fixed neutrino energy and baseline, in two degenerate solutions. In light of this, we refine a previous analysis of the sensitivity to leptonic CP violation at a neutrino factory, in the LMA-MSW scenario, by exploring the full range of $\delta$ and $\theta_{13}$. Furthermore, we take into account the expected uncertainties on the solar and atmospheric oscillation parameters and in the average Earth matter density along the neutrino path. An intermediate baseline of O(3000) km is still the best option to tackle CP violation, although a combination of two baselines turns out to be very important in resolving degeneracies.

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