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- W2951450328 abstract "The OPERA long-baseline neutrino-oscillation experiment has observed the direct appearance of $nu_tau$ in the CNGS $nu_mu$ beam. Two large muon magnetic spectrometers are used to identify muons produced in the $tau$ leptonic decay and in $nu_mu^{CC}$ interactions by measuring their charge and momentum. Besides the kinematic analysis of the $tau$ decays, background resulting from the decay of charmed particles produced in $nu_mu^{CC}$ interactions is reduced by efficiently identifying the muon track. A new method for the charge sign determination has been applied, via a weighted angular matching of the straight track-segments reconstructed in the different parts of the dipole magnets. Results obtained for Monte Carlo and real data are presented. Comparison with a method where no matching is used shows a significant reduction of up to 40% of the fraction of wrongly determined charges." @default.
- W2951450328 created "2019-06-27" @default.
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