Dual-Baseline Search for Active-to-Sterile Neutrino Oscillations in NOvA

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, 13.6e20 protons on target, doubles that previously analyzed by NOvA, and the analysis is the first to use ${\nu }_{\mu }$ 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 $\Delta m_{41}^2$ range extending 2 (3) orders of magnitude above (below) 1 eV${}^2$. 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 ${\nu }_{\tau }$ appearance for $\Delta m_{41}^2\le 3$ eV${}^2$.

8 pages, 3 figures

References in corpus (11)

• Observation of electron-antineutrino disappearance at Daya Bay
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• Measurement of Neutrino Oscillation by the K2K Experiment
• An Improved Measurement of Neutrino Oscillation Parameters by the NOvA Experiment
• Improved measurements of the neutrino mixing angle ${\theta }_{13}$ with the Double Chooz detector
• Limits on sterile neutrino mixing using atmospheric neutrinos in Super-Kamiokande
• Charged-current neutrino-nucleus reactions within the SuSAv2-MEC approach
• A Search for Electron Neutrino Transitions to Sterile States in the BEST Experiment
• Search for Sterile Neutrinos Mixing with Muon Neutrinos in MINOS
• Search for active-sterile neutrino mixing using neutral-current interactions in NOvA
• Search for light sterile neutrinos with the T2K far detector Super-Kamiokande at a baseline of 295 km

Cited by in corpus (2)

• Search for Light Sterile Neutrinos With Two Neutrino Beams at MicroBooNE
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