%0 Journal Article
%T Golden channel at a neutrino factory revisited: Improved sensitivities from a magnetized iron neutrino detector
%A Bayes, R.
%A Laing, A.
%A Soler, F. J. P.
%A Cervera-Villanueva, A.
%A Gomez-Cadenas, J. J.
%A Hernandez, P.
%A Martin-Albo, J.
%A Burguet-Castell, J.
%J Physical Review D
%D 2012
%V 86
%N 9
%I Amer Physical Soc
%@ 1550-7998
%G English
%F Bayes_etal2012
%O WOS:000310868700002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1224), last updated on Thu, 13 Dec 2012 13:39:51 +0000
%X This paper describes the performance and sensitivity to neutrino mixing parameters of a Magnetised Iron Neutrino Detector at a Neutrino Factory with a neutrino beam created from the decay of 10 GeV muons. Specifically, it is concerned with the ability of such a detector to detect muons of the opposite sign to those stored (wrong-sign muons) while suppressing contamination of the signal from the interactions of other neutrino species in the beam. A new, more realistic simulation and analysis, which improves the efficiency of this detector at low energies, has been developed using the GENIE neutrino event generator and the GEANT4 simulation toolkit. Low-energy neutrino events down to 1 GeV were selected, while reducing backgrounds to the 10(-4) level. Signal efficiency plateaus of similar to 60% for nu(mu) and similar to 70% for (nu) over bar (mu) events were achieved starting at similar to 5 GeV. Contamination from the nu(mu) -> nu(tau) oscillation channel was studied for the first time and was found to be at the level between 1% and 4%. Full response matrices are supplied for all the signal and background channels from 1 GeV to 10 GeV. The sensitivity of an experiment involving a Magnetised Iron Neutrino Detector detector of 100 ktons at 2000 km from the Neutrino Factory is calculated for the case of sin(2)2 theta(13) similar to 10(-1). For this value of theta(13), the accuracy in the measurement of the CP-violating phase is estimated to be Delta delta(CP) similar to 3 degrees-5 degrees, depending on the value of delta(CP), the CP coverage at 5 sigma is 85% and the mass hierarchy would be determined with better than 5 sigma level for all values of delta(CP).
%R 10.1103/PhysRevD.86.093015
%U http://arxiv.org/abs/1208.2735
%U https://doi.org/10.1103/PhysRevD.86.093015
%P 093015-27pp