Correlations of errors in a CP-violation neutrino factory experiment

Abstract

An indirect CP-violation neutrino factory experiment is studied, including simul taneous correlations of errors of the six oscillation parameters and a matter ef fect normalisation parameter, C. It is found that for larger values of ${\theta }_{13}$ ($3^{\circ }$), an uncertainty on the matter effect of the order 5% means t hat the optimal baseline for measurement of $\delta$ is reduced from 3000km to 2 000km. When the background fraction is assumed to be $10^{-3}$ the optimal muon energy is also reduced from 50GeV to around 20GeV. An experiment with L=2000km, $E_{\mu }=$20GeV is found to be sensitive to non-zero $\delta$ down to around $\text{t}het{a}_{13}\approx 0.3^{\circ }$.

Comments: 4 pages, uses elsart.cls & epsfig, 2 figures, talk at the NUFACT'01 Workshop in Tsukuba, Japan, 24-30 May 2001