Document Type
Article
Department/Program
Physics
Journal Title
Physical Review Letters
Pub Date
2016
Volume
116
Issue
15
Abstract
We report results from the first search for nu(mu) -> nu(e) transitions by the NOvA experiment. In an exposure equivalent to 2.74 x 10(20) protons on target in the upgraded NuMI beam at Fermilab, we observe 6 events in the Far Detector, compared to a background expectation of 0.99 +/- 0.11 (syst) events based on the Near Detector measurement. A secondary analysis observes 11 events with a background of 1.07 +/- 0.14 (syst). The 3.3 sigma excess of events observed in the primary analysis disfavors 0.1 pi < delta(CP) < 0.5 pi in the inverted mass hierarchy at the 90% C.L.
Recommended Citation
Adamson, P.; Adler, C.; Andrews, N.; Colo, M.; Devan, A.; Liu, J.; Mathis, M.; Nelson, J. K.; Radovic, A.; and Vahle, P., First Measurement of Electron Neutrino Appearance in NOvA (2016). Physical Review Letters, 116(15).
10.1103/PhysRevLett.116.151806
DOI
10.1103/PhysRevLett.116.151806
