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Improved measurement of neutrino oscillation parameters by the NOvA experiment
Acero, Mario A. Adamson, P. Aliaga, Leo Meyer, Holger Muether, Mathew Roy, P. Solomey, Nickolas
Acero, Mario A.
Adamson, P.
Aliaga, Leo
Meyer, Holger
Muether, Mathew
Roy, P.
Solomey, Nickolas
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Authors
Acero, Mario A.
Adamson, P.
Aliaga, Leo
Meyer, Holger
Muether, Mathew
Roy, P.
Solomey, Nickolas
Adamson, P.
Aliaga, Leo
Meyer, Holger
Muether, Mathew
Roy, P.
Solomey, Nickolas
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Advisors
Original Date
Digitization Date
Issue Date
2022-08-03
Type
Article
Genre
Keywords
Neutrino-mode beam,NOvA experiment,Antineutrino,Neutrino,Oscillation framework
Subjects (LCSH)
Citation
The, N. C., Acero, M. A., Adamson, P., Aliaga, L., Anfimov, N., Antoshkin, A., . . . Zwaska, R. (2022). Improved measurement of neutrino oscillation parameters by the NOvA experiment. Physical Review D, 106(3), 032004. https://doi.org/10.1103/PhysRevD.106.032004
Abstract
We present new νμ → νe, νμ → νμ, ν¯μ → ν¯e, and ν¯μ → ν¯μ oscillation measurements by the NOvA experiment, with a 50% increase in neutrino-mode beam exposure over the previously reported results. The additional data, combined with previously published neutrino and antineutrino data, are all analyzed using improved techniques and simulations. A joint fit to the νe, νμ, ν¯e, and ν¯μ candidate samples within the 3-flavor neutrino oscillation framework continues to yield a best-fit point in the normal mass ordering and the upper octant of the θ23 mixing angle, with Δm2 32 ¼ ð2.41 0.07Þ × 10−3 eV2 and sin2 θ23 ¼ 0.57þ0.03 −0.04 . The data disfavor combinations of oscillation parameters that give rise to a large asymmetry in the rates of νe and ν¯e appearance. This includes values of the charge parity symmetry (CP) violating phase in the vicinity of δCP ¼ π=2 which are excluded by > 3σ for the inverted mass ordering, and values around δCP ¼ 3π=2 in the normal ordering which are disfavored at 2σ confidence.
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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.
Publisher
American Physical Society
Journal
Book Title
Series
Phys. Rev. D
Volume 106, No. 3
Volume 106, No. 3
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DOI
ISSN
2470-0010