File:PhysRevLett.127.201801.pdf
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editDescriptionPhysRevLett.127.201801.pdf |
English: This Letter reports results from the first long-baseline search for sterile antineutrinos mixing in an accelerator-based antineutrino-dominated beam. The rate of neutral-current interactions in the two NOvA detectors, at distances of 1 and 810 km from the beam source, is analyzed using an exposure of 12.51×1020 protons-on-target from the NuMI beam at Fermilab running in antineutrino mode. A total of 121 of neutral-current candidates are observed at the far detector, compared to a prediction of 122±11(stat.)±15(syst.) assuming mixing only between three active flavors. No evidence for ¯νμ→¯νs oscillation is observed. Interpreting this result within a 3+1 model, constraints are placed on the mixing angles θ24<25° and θ34<32° at the 90% C.L. for 0.05 eV2≤Δm241≤0.5 eV2, the range of mass splittings that produces no significant oscillations at the near detector. These are the first 3+1 confidence limits set using long-baseline accelerator antineutrinos. |
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https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.127.201801 https://doi.org/10.1103/PhysRevLett.127.201801 |
Author | M. A. Acero et al. (The NOvA Collaboration) |
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Author | M. A. Acero et al. (The NOvA Collaboration) |
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Publisher | American Physical Society |
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Online copyright statement | Published by the American Physical Society |
Keywords | doi:10.1103/PhysRevLett.127.201801 url:https://doi.org/10.1103/PhysRevLett.127.201801 |
Date and time of digitizing | 11 November 2021 |
Software used | Published by the American Physical Society |
Date metadata was last modified | 17:52, 6 July 2021 |
File change date and time | 11 November 2021 |
Unique ID of original document | uuid:b5dac7ed-0049-4508-acea-6d210865524b |
Identifier | doi:10.1103/PhysRevLett.127.201801 |
Conversion program | Acrobat Distiller 10.1.16 (Windows) |
Encrypted | no |
Page size | 612 x 792 pts (letter) |
Version of PDF format | 1.4 |