Extracting matter effects, masses and mixings at a neutrino factory

M. Freund, P. Huber, M. Lindner
2000 Nuclear Physics B  
We discuss and quantify different possibilities to determine matter effects, the value and the sign of Delta m^2_31, as well as the magnitude of sin^2 2θ_13 in very long baseline neutrino oscillation experiments. We study neutrino oscillation at a neutrino factory in the ν_μ→ν_μ disappearance and ν_e→ν_μ appearance channels with and without muon charge identification. One possibility is to analyze the ν_e→ν_μ appearance channels leading to wrong sign muon events, which requires however very
more » ... muon charge identification. Without charge identification it is still possible to operate the neutrino factory both with μ^- and μ^+ beams and to analyze the differences in the total neutrino event rate spectra. We show that this leads already to a quite good sensitivity, which may be important if right sign charge rejection capabilities are insufficient. With muon charge identification one can study the ν_μ→ν_μ disappearance and the ν_e→ν_μ appearance channels independently. The best method is finally achieved by combining all available information of the ν_μ→ν_μ disappearance and ν_e→ν_μ appearance channels with charge identification and we show the sensitivity which can be achieved.
doi:10.1016/s0550-3213(00)00369-2 fatcat:engvukiihfakvlbhypgceepkiu