Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2005-07-15
Phys.Rev.D72:052005,2005
Physics
High Energy Physics
High Energy Physics - Experiment
23 pages, 14 figures
Scientific paper
10.1103/PhysRevD.72.052005
Upward-going stopping muons initiated by atmospheric \numu and \anumu interactions in the rock below the Soudan 2 detector have been isolated, together with a companion sample of neutrino-induced single muons, created within the detector, which travel downwards and exit. The downward-going sample is consistent with the atmospheric-neutrino flux prediction, but the upward-going sample exhibits a sizeable depletion. Both are consistent with previously reported Soudan-2 neutrino-oscillation results. Inclusion of the two samples in an all-event likelihood analysis, using recent 3D-atmospheric-neutrino-flux calculations, reduces both the allowed oscillation parameter region and the probability of the no-oscillation hypothesis.
Allison W. W. M.
Soudan-2 Collaboration
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