Acero, MA;
Adamson, P;
Aliaga, L;
Alion, T;
Allakhverdian, V;
Anfimov, N;
Antoshkin, A;
... Zwaska, R; + view all
(2018)
New constraints on oscillation parameters from v(e) appearance and v(mu) disappearance in the NOvA experiment.
Physical Review D
, 98
(3)
, Article 032012. 10.1103/PhysRevD.98.032012.
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Abstract
We present updated results from the NOvA experiment for ν μ → ν μ and ν μ → ν e oscillations from an exposure of 8.85 × 10 20 protons on target, which represents an increase of 46% compared to our previous publication. The results utilize significant improvements in both the simulations and analysis of the data. A joint fit to the data for ν μ disappearance and ν e appearance gives the best-fit point as normal mass hierarchy, Δ m 2 32 = 2.44 × 10 − 3 eV 2 / c 4 , sin 2 θ 23 = 0.56 , and δ CP = 1.21 π . The 68.3% confidence intervals in the normal mass hierarchy are Δ m 2 32 ∈ [ 2.37 , 2.52 ] × 10 − 3 eV 2 / c 4 , sin 2 θ 23 ∈ [ 0.43 , 0.51 ] ∪ [ 0.52 , 0.60 ] , and δ CP ∈ [ 0 , 0.12 π ] ∪ [ 0.91 π , 2 π ] . The inverted mass hierarchy is disfavored at the 95% confidence level for all choices of the other oscillation parameters.
| Type: | Article |
|---|---|
| Title: | New constraints on oscillation parameters from v(e) appearance and v(mu) disappearance in the NOvA experiment |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevD.98.032012 |
| Publisher version: | https://doi.org/10.1103/PhysRevD.98.032012 |
| 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, Astronomy & Astrophysics, Physics, Particles & Fields, Physics, ELASTIC TRACKING, NEUTRINO, ALGORITHMS, SIMULATION |
| 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/10056784 |
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