On the measurement of leptonic CP violation

By J. Castell, M. B. Gavela, J. Cadenas, P. Hernandez, O. Mena. 2001

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We show that the simultaneous determination of the leptonic CP-odd phaseand the angle �13 from the subleading transitionse → �µ and ¯ �e → ¯ �µ 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 ofand �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 base- line 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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/3949f1bc449b5a1e3b6156d9a5a68f2f04c4dbce