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

Abstract The study of the eightfold degeneracy at a neutrino complex that includes a standard β -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 Cerenkov detector located at the Frejus laboratory (baseline 130 km) is exploited. The performance in terms of sensitivity for measuring the continuous ( θ 13 and δ ) and discrete ( sign [ Δ m 23 2 ] and sign [ tan ( 2 θ 23 ) ] ) oscillation parameters for the β -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.