Limits on active to sterile neutrino oscillations from disappearance searches in the MINOS, daya bay, and bugey-3 experiments
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2016
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Searches for a light sterile neutrino have been performed independently by the MINOS and the Daya
Bay experiments using the muon (anti)neutrino and electron antineutrino disappearance channels,
respectively. In this Letter, results from both experiments are combined with those from the Bugey-3
reactor neutrino experiment to constrain oscillations into light sterile neutrinos. The three experiments are
sensitive to complementary regions of parameter space, enabling the combined analysis to probe regions
allowed by the Liquid Scintillator Neutrino Detector (LSND) and MiniBooNE experiments in a minimally
extended four-neutrino flavor framework. Stringent limits on sin2 2θμe are set over 6 orders of magnitude in
the sterile mass-squared splitting Δm2
41. The sterile-neutrino mixing phase space allowed by the LSND and
MiniBooNE experiments is excluded for Δm2
41 < 0.8 eV2 at 95% CLs.
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ADAMSON, P. et al. Limits on active to sterile neutrino oscillations from disappearance searches in the MINOS, daya bay, and bugey-3 experiments. Physical Review Letters, Washington, v. 117, e151801, 2016. DOI: 10.1103/PhysRevLett.117.151801. Disponível em: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.151801. Acesso em: 16 maio 2023.