Dual-Baseline search for active-to-sterile neutrino oscillations in NOvA
NOvA Collaboration Meyer, Holger Muether, Mathew Solomey, Nickolas Roy, P. Dolce, M. Yahaya, Abdul-Wasit
NOvA Collaboration
Meyer, Holger
Muether, Mathew
Solomey, Nickolas
Roy, P.
Dolce, M.
Yahaya, Abdul-Wasit
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2025-02-26
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Acero, M. A., Adamson, P., Anfimov, N., Antoshkin, A., Arrieta-Diaz, E., . . . (The NOvA Collaboration). (2025). Dual-Baseline Search for Active-to-Sterile Neutrino Oscillations in NOvA Physical Review Letters, 134(8) 081804, 10.1103/PhysRevLett.134.081804
Abstract
We report a search for neutrino oscillations to sterile neutrinos under a model with three active and one sterile neutrinos (3+1 model). This analysis uses the NOvA detectors exposed to the NuMI beam, running in neutrino mode. The data exposure, 13.6×1020 protons on target, doubles that previously analyzed by NOvA, and the analysis is the first to use νμ charged-current interactions in conjunction with neutral-current interactions. Neutrino samples in the near and far detectors are fitted simultaneously, enabling the search to be carried out over a Δm412 range extending 2 (3) orders of magnitude above (below) 1 eV2. NOvA finds no evidence for active-to-sterile neutrino oscillations under the 3+1 model at 90% confidence level. New limits are reported in multiple regions of parameter space, excluding some regions currently allowed by IceCube at 90% confidence level. We additionally set the most stringent limits for anomalous ντ appearance for Δm412≤3 eV2. © 2025 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"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.
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American Physical Society
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Physical Review Letters
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00319007