Acero, MA;
Adamson, P;
Aliaga, L;
Alion, T;
Allakhverdian, V;
Altakarli, S;
Anfimov, N;
... Zwaska, R; + view all
(2019)
First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA.
Physical Review Letters
, 123
(15)
, Article 151803. 10.1103/PhysRevLett.123.151803.
Preview |
Text
PhysRevLett.123.151803.pdf - Published Version Download (364kB) | Preview |
Abstract
The NOvA experiment has seen a 4.4 σ signal of ¯ ν e appearance in a 2 GeV ¯ ν μ beam at a distance of 810 km. Using 12.33 × 10 20 protons on target delivered to the Fermilab NuMI neutrino beamline, the experiment recorded 27 ¯ ν μ → ¯ ν e candidates with a background of 10.3 and 102 ¯ ν μ → ¯ ν μ candidates. This new antineutrino data are combined with neutrino data to measure the parameters | Δ m 2 32 | = 2.4 8 + 0.11 − 0.06 × 10 − 3 eV 2 / c 4 and sin 2 θ 23 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 C P = π / 2 for the inverted mass hierarchy by more than 3 σ and favor the normal neutrino mass hierarchy by 1.9 σ and θ 23 values in the upper octant by 1.6 σ .
| Type: | Article |
|---|---|
| Title: | First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.123.151803 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.123.151803 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, ABSORPTION CROSS-SECTIONS, MOMENTUM RANGE, GEV-C, PROTONS, NUCLEI, PIONS, ANTIPROTONS, MESONS, MASS, PBAR |
| 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.ucl.ac.uk/id/eprint/10084177 |
Archive Staff Only
 |
View Item |
