Adamson, P;
Aliaga, L;
Ambrose, D;
Anfimov, N;
Antoshkin, A;
Arrieta-Diaz, E;
Augsten, K;
... Zwaska, R; + view all
(2017)
Measurement of the Neutrino Mixing Angle theta(23) in NOvA.
Physical Review Letters
, 118
(15)
, Article 151802. 10.1103/PhysRevLett.118.151802.
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Abstract
This Letter reports new results on muon neutrino disappearance from NOvA, using a 14 kton detector equivalent exposure of 6.05 × 1020 protons on target from the NuMI beam at the Fermi National Accelerator Laboratory. The measurement probes the muon-tau symmetry hypothesis that requires maximal θ23 mixing (θ23 ¼ π=4). Assuming the normal mass hierarchy, we find Δm2 32 ¼ ð2.67 0.11Þ × 10−3 eV2 and sin2 θ23 at the two statistically degenerate values 0.404þ0.030 −0.022 and 0.624þ0.022 −0.030 , both at the 68% confidence level. Our data disfavor the maximal mixing scenario with 2.6σ significance.
| Type: | Article |
|---|---|
| Title: | Measurement of the Neutrino Mixing Angle theta(23) in NOvA |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.118.151802 |
| Publisher version: | http://doi.org/10.1103/PhysRevLett.118.151802 |
| Language: | English |
| Additional information: | © 2017 American Physical Society. This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, MODEL, BEAM |
| 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/1540437 |
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