Search for sterile neutrinos mixing with muon neutrinos in MINOS
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2016
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We report results of a search for oscillations involving a light sterile neutrino over distances of 1.04 and
735 km in a νμ-dominated beam with a peak energy of 3 GeV. The data, from an exposure of 10.56 × 1020
protons on target, are analyzed using a phenomenological model with one sterile neutrino. We constrain the
mixing parameters θ24 and Δm2
41 and set limits on parameters of the four-dimensional Pontecorvo-Maki Nakagawa-Sakata matrix, jUμ4j2 and jUτ4j2, under the assumption that mixing between νe and νs is
negligible (jUe4j2 ¼ 0). No evidence for νμ → νs transitions is found and we set a world-leading limit on
θ24 for values of Δm2
41 ≲ 1 eV2.
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ADAMSON, P. et al. Search for sterile neutrinos mixing with muon neutrinos in MINOS. Physical Review Letters, Washington, v. 117, e151803, 2016. DOI: 10.1103/PhysRevLett.117.151803. Disponível em: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.151803. Acesso em: 16 maio 2023.