| Description: |
This is an open access article under the CC BY license. ; 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. ; University of Minnesota, UMN; National Science Foundation, NSF; High Energy Physics, HEP; Science and Technology Facilities Council, STFC; GA UK, Czech Republic; Department of Science and Technology, Ministry of Science and Technology, India, DST; Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq; Russian Foundation for Basic Research, RFBR; U.S. Department of Energy, USDOE; Fundação de Amparo à Pesquisa do Estado de Goiás, FAPEG; Fermilab, FNAL; Office of Science, SC; Royal Society; European Research Council, ERC; Ministerstwo Edukacji i Nauki, MNiSW; Ministerstvo Školství, Mládeže a Tělovýchovy, MŠMT; ... |