Abstract
We report results from the first search for transitions by the NOvA experiment. In an exposure equivalent to protons on target in the upgraded NuMI beam at Fermilab, we observe 6 events in the Far Detector, compared to a background expectation of events based on the Near Detector measurement. A secondary analysis observes 11 events with a background of . The excess of events observed in the primary analysis disfavors in the inverted mass hierarchy at the 90% C.L.
- Received 19 January 2016
DOI:https://doi.org/10.1103/PhysRevLett.116.151806
© 2016 American Physical Society
Physics Subject Headings (PhySH)
Viewpoint
Ghostly Neutrino Comes into Sharper Focus
Published 13 April 2016
The first results from the NOvA experiment set new constraints on charge-parity violation in neutrinos and on the ordering of neutrino masses.
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