Measurement of the L/E distributions of atmospheric ν in Soudan 2 and their interpretation as neutrino oscillations
Abstract
A deficit of atmospheric νμ events, consistent with the hypothesis of neutrino oscillations, is observed in the 5.90 kiloton-year fiducial exposure of the Soudan 2 detector. An unbinned maximum likelihood analysis of the neutrino L/E distribution has been carried out using the Feldman-Cousins prescription. The probability of the no oscillation hypothesis is 5.8×10-4. The 90% confidence allowed region in the sin22θ,Δm2 plane is presented. The region includes the 90% confidence allowed region of the Super-K experiment.
- Publication:
-
Physical Review D
- Pub Date:
- December 2003
- DOI:
- 10.1103/PhysRevD.68.113004
- arXiv:
- arXiv:hep-ex/0307069
- Bibcode:
- 2003PhRvD..68k3004S
- Keywords:
-
- 14.60.Lm;
- 14.60.Pq;
- 95.85.Ry;
- Ordinary neutrinos (nuW bosons;
- Neutrino mass and mixing;
- Neutrino muon pion and other elementary particles;
- cosmic rays;
- High Energy Physics - Experiment
- E-Print:
- 28 pages, 11 figures, submitted to Phys Rev D