Study of the eightfold degeneracy with a standard β-beam and a super-beam facility

The study of the eightfold degeneracy at a neutrino complex that includes a standard P-beam and a super-beam facility is presented for the first time in this paper. The scenario where the neutrinos are sent toward a megaton water 1 Cerenkov detector located at the Frejus laboratory (baseline 130 km) is exploited. The performance in terms of sensitivity for measuring the continuous (theta13 and delta) and discrete (sign[trianglem(23)(2)] and sign[tan(2theta(23))]) oscillation parameters for the beta-beam and super-beam alone, and for their combination has been studied. A brief review of the present uncertainties on the neutrino and antineutrino cross-sections is also reported and their impact on the discovery potential discussed. (C) 2004 Elsevier B.V. All rights reserved.