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First constraints on light sterile neutrino oscillations from combined appearance and disappearance searches with the MicroBooNE detector
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MicroBooNE Collaboration (Including:
). (2023) First constraints on light sterile neutrino oscillations from combined appearance and disappearance searches with the MicroBooNE detector. Physical Review Letters, 130 (1). 011801. doi:10.1103/PhysRevLett.130.011801 ISSN 0031-9007.
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Official URL: https://doi.org/10.1103/PhysRevLett.130.011801
Abstract
We present a search for eV-scale sterile neutrino oscillations in the MicroBooNE liquid argon detector, simultaneously considering all possible appearance and disappearance effects within the 3+1 active-to-sterile neutrino oscillation framework. We analyze the neutrino candidate events for the recent measurements of charged-current ν_{e} and ν_{μ} interactions in the MicroBooNE detector, using data corresponding to an exposure of 6.37×10^{20} protons on target from the Fermilab booster neutrino beam. We observe no evidence of light sterile neutrino oscillations and derive exclusion contours at the 95% confidence level in the plane of the mass-squared splitting Δm_{41}^{2} and the sterile neutrino mixing angles θ_{μe} and θ_{ee}, excluding part of the parameter space allowed by experimental anomalies. Cancellation of ν_{e} appearance and ν_{e} disappearance effects due to the full 3+1 treatment of the analysis leads to a degeneracy when determining the oscillation parameters, which is discussed in this Letter and will be addressed by future analyses.
Item Type: | Journal Article | |||||||||||||||||||||||||||
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Subjects: | Q Science > QA Mathematics Q Science > QC Physics |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||||||||
SWORD Depositor: | Library Publications Router | |||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Neutrinos, Neutrino interactions, Oscillations, Liquid argon | |||||||||||||||||||||||||||
Journal or Publication Title: | Physical Review Letters | |||||||||||||||||||||||||||
Publisher: | American Physical Society | |||||||||||||||||||||||||||
ISSN: | 0031-9007 | |||||||||||||||||||||||||||
Official Date: | 6 January 2023 | |||||||||||||||||||||||||||
Dates: |
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Volume: | 130 | |||||||||||||||||||||||||||
Number: | 1 | |||||||||||||||||||||||||||
Number of Pages: | 9 | |||||||||||||||||||||||||||
Article Number: | 011801 | |||||||||||||||||||||||||||
DOI: | 10.1103/PhysRevLett.130.011801 | |||||||||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||||||||
Date of first compliant deposit: | 21 March 2023 | |||||||||||||||||||||||||||
Date of first compliant Open Access: | 22 March 2023 | |||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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