Neutrino oscillation effects in Soudan 2 upward-stopping muons

Journal article

Upward-going stopping muons initiated by atmospheric νμ and ν̄μ 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 sizable 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. © 2005 The American Physical Society.

Authors: Allison, W; Alner, G; Ayres, D; Barr, G; Barrett, W

• Publication status: Published
• Journal: Physical Review D
• Volume: 72
• Issue: 5
• Publication date: 2005-09-01
• DOI: 10.1103/PhysRevD.72.052005
• EISSN: 1550-2368
• ISSN: 1550-7998
• Language: English