2013/11/17 by Wilking, Michael
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)
paper · doi:10.48550/arxiv.1311.4114
The T2K Experiment has observed the appearance of electron neutrinos in a muon-neutrino beam. Twenty eight neutrino candidates pass the selection cuts with a predicted background of 4.64 ± 0.53 events, which corresponds to a 6.8σ exclusion of θ13 = 0. When comparing the θ13 = 0 hypothesis to the best fit of the full electron momentum and angle distribution, θ13 = 0 is excluded at 7.5σ for sin2 2θ23 = 1 and δCP = 0. In addition, results from the T2K νμ disappearance analysis have also been updated to improve the treatment of full 3-flavor oscillations.