Adamson, P;
Ader, C;
Andrews, M;
Anfimov, N;
Anghel, I;
Arms, K;
Arrieta-Diaz, E;
... Zwaska, R; + view all
(2016)
First Measurement of Electron Neutrino Appearance in NOvA.
Physical Review Letters
, 116
(15)
, Article 151806. 10.1103/PhysRevLett.116.151806.
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Abstract
We report results from the first search for νμ → νe transitions by the NOvA experiment. In an exposure equivalent to 2.74 × 1020 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 ± 0.11ðsystÞ events based on the Near Detector measurement. A secondary analysis observes 11 events with a background of 1.07 ± 0.14ðsystÞ. The 3.3σ excess of events observed in the primary analysis disfavors 0.1π < δCP < 0.5π in the inverted mass hierarchy at the 90% C.L.
| Type: | Article |
|---|---|
| Title: | First Measurement of Electron Neutrino Appearance in NOvA |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.116.151806 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.116.151806 |
| Language: | English |
| Additional information: | This is the published version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10026209 |
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