Document Type
Article
Abstract
The NOvA experiment has seen a 4.4σ signal of ⊽ e appearance in a 2 GeV⊽μ beam at a distance of 810 km. Using 12.33×1020 protons on target delivered to the Fermilab NuMI neutrino beamline, the experiment recorded 27 ⊽μ→⊽e candidates with a background of 10.3 and 102⊽μ→⊽μ candidates. This new antineutrino data are combined with neutrino data to measure the parameters |Δm 2 32 | = 2.48 +0.11 -0.06 x 10 -3 eV2 / c4 and sin2 θ23 in the ranges from (0.53- 0.60) and (0.45-0.48) in the normal neutrino mass hierarchy. The data exclude most values near δ CP = π / 2 for the inverted mass hierarchy by more than 3 σ and favor the normal neutrino mass hierarchy by 1.9σ and θ23 values in the upper octant by 1.6σ .
Digital Object Identifier (DOI)
Publication Info
Published in Physical Review Letters, Volume 123, Issue 15, 2019, pages 151803-.
©Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Rights
©Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
APA Citation
Acero, M. A., Adamson, P., Aliaga, L., T. Alion, V. Allakhverdian, S. Altakarli, N. Anfimov, A. Antoshkin, A. Aurisano, Back, A., C. Backhouse, Baird, M., N. Balashov, Baldi, P., B. Bambah, Bashar, S., Bays, K., Bending, S., Bernstein, R. H., & Bhatnagar, V. (2019). First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA. Physical Review Letters, 123(15). https://doi.org/10.1103/physrevlett.123.151803