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Performance of the MIND detector at a Neutrino Factory using realistic muon reconstruction

AuthorsCervera Villanueva, Anselmo ; Laing, Andrew ; Martín-Albo, Justo ; Soler, F. J. P.
Issue Date21-Dec-2010
CitationNuclear Instruments and Methods in Physics Research - Section A 624 (3): 601-614 (2010)
AbstractA Neutrino Factory producing an intense beam composed of v(e)((v) over bar (e)) and (v) over bar (mu)(v(mu)) from muon decays has been shown to have the greatest sensitivity to the two currently unmeasured neutrino mixing parameters theta(13) and delta(CP) Using the wrong-sign muon signal to measure v(e)-> v(mu)((v) over bar (e) ->(v) over bar (mu)) oscillations in a 50kt Magnetised Iron Neutrino Detector (MIND) sensitivity to delta(CP) could be maintained down to small values of theta(13) However the detector efficiencies used in these previous studies were calculated assuming perfect pattern recognition In this paper MIND is reassessed taking into account for the first time a realistic pattern recognition for the muon candidate Reoptimisation of the analysis utilises a combination of methods including a multivariate analysis similar to the one used in MINOS to maintain high efficiency while suppressing backgrounds ensuring that the signal selection efficiency and the background levels are comparable or better than the ones in previous analyses As a result MIND remains the most sensitive future facility for the discovery of CP violation from neutrino oscillations.
Publisher version (URL)http://dx.doi.org/10.1016/j.nima.2010.09.049
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