Improved Search for a Light Sterile Neutrino with the Full Configuration of the Daya Bay Experiment

Abstract

This Letter reports an improved search for light sterile neutrino mixing in the electron antineutrino disappearance channel with the full configuration of the Daya Bay Reactor Neutrino Experiment. With an additional 404 days of data collected in eight antineutrino detectors, this search benefits from 3.6 times the statistics available to the previous publication, as well as from improvements in energy calibration and background reduction. A relative comparison of the rate and energy spectrum of reactor antineutrinos in the three experimental halls yields no evidence of sterile neutrino mixing in the $2\times 10^{-4}\lesssim |\Delta m_{41}^2|\lesssim 0.3$ eV${}^2$ mass range. The resulting limits on ${\sin }^{2}2{\theta }_{14}$ are improved by approximately a factor of 2 over previous results and constitute the most stringent constraints to date in the $|\Delta m_{41}^2|\lesssim 0.2$ eV${}^2$ region.

6 pages, 3 figures, 1 table

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Cited by in corpus (28)

• Sterile neutrino search at NEOS Experiment
• Limits on Active to Sterile Neutrino Oscillations from Disappearance Searches in the MINOS, Daya Bay, and Bugey-3 Experiments
• An eV-scale sterile neutrino search using eight years of atmospheric muon neutrino data from the IceCube Neutrino Observatory
• Search for Sterile Neutrinos Mixing with Muon Neutrinos in MINOS
• First Constraints on the Complete Neutrino Mixing Matrix with a Sterile Neutrino
• Improved Constraints on Sterile Neutrino Mixing from Disappearance Searches in the MINOS, MINOS+, Daya Bay, and Bugey-3 Experiments
• The $\mu$-$\tau$ reflection symmetry of Majorana neutrinos
• Neutrino Physics Opportunities with the IsoDAR Source at Yemilab
• Probing Direct and Indirect Unitarity Violation in Future Accelerator Neutrino Facilities
• A Combined View of Sterile-Neutrino Constraints from CMB and Neutrino Oscillation Measurements
• MeV-scale reheating temperature and cosmological production of light sterile neutrinos
• Statistical interpretation of sterile neutrino oscillation searches at reactors
• Impact of Wave Packet Separation in Low-Energy Sterile Neutrino Searches
• Very Light Sterile Neutrinos at NOvA and T2K
• Direct comparison of sterile neutrino constraints from cosmological data, ${\nu }_e$ disappearance data and ${\nu }_{\mu }\to {\nu }_e$ appearance data in a $3+1$ model
• Non-zero ${\theta }_{13}$ with Unbroken $\mu -\tau$ Symmetry of the Active Neutrino Mass Matrix in the Presence of a Light Sterile Neutrino
• Texture zeros of low-energy Majorana neutrino mass matrix in 3+1 scheme
• Search for Signatures of Sterile Neutrinos with Double Chooz
• Final Search for Short-Baseline Neutrino Oscillations with the PROSPECT-I Detector at HFIR
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• Status of Anomalies and Sterile Neutrino Searches at Nuclear Reactors
• Search for a light sterile neutrino with 7.5 years of IceCube DeepCore data
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• Note on Thermalization of Non-resonantly Produced Sterile Neutrinos
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• Experimental summary of the $52^{\mathrm{nd}}$ Rencontres de Moriond session on Electroweak Interactions and Unified Theories
• Sensitivity of Hyper-Kamiokande to sub-eV Sterile Neutrinos
• Nuclear Physics and Astrophysics of Neutrino Oscillations