Search for Muon-Neutrino to Electron-Neutrino Transitions in MINOS
Abstract
This Letter reports on a search for νμ→νe transitions by the MINOS experiment based on a 3.14×1020 protons-on-target exposure in the Fermilab NuMI beam. We observe 35 events in the Far Detector with a background of 27±5(stat)±2(syst) events predicted by the measurements in the Near Detector. If interpreted in terms of νμ→νe oscillations, this 1.5σ excess of events is consistent with sin2(2θ13) comparable to the CHOOZ limit when |Δm2|=2.43×10-3eV2 and sin2(2θ23)=1.0 are assumed.
- Publication:
-
Physical Review Letters
- Pub Date:
- December 2009
- DOI:
- 10.1103/PhysRevLett.103.261802
- arXiv:
- arXiv:0909.4996
- Bibcode:
- 2009PhRvL.103z1802A
- Keywords:
-
- 14.60.Pq;
- 14.60.Lm;
- 29.27.-a;
- Neutrino mass and mixing;
- Ordinary neutrinos (nuW bosons;
- Beams in particle accelerators;
- High Energy Physics - Experiment
- E-Print:
- 5 pages, 4 figures, submitted to Phys. Rev. Lett