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Abstract
We present the results of a new analysis of the data of the MiniBooNE experiment taking into account the additional background of photons from ∆+/0 decay proposed in ref. [1] and additional contributions due to coherent photon emission, incoherent production of higher mass resonances, and incoherent non-resonant nucleon production. We show that the new background can explain part of the MiniBooNE low-energy excess and the statistical significance of the MiniBooNE indication in favor of short-baseline neutrino oscillation decreases from 5.1σ to 3.6σ. We also consider the implications for short-baseline neutrino oscillations in the 3+1 active-sterile neutrino mixing framework. We show that the new analysis of the MiniBooNE data indicates smaller active-sterile neutrino mixing and may lead us towards a solution of the appearance-disappearance tension in the global fit of short-baseline neutrino oscillation data.
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Details
1 Istituto Nazionale di Fisica Nucleare (INFN), Torino, Italy (GRID:grid.470222.1)
2 CERN, Theory Division, Geneva 23, Switzerland (GRID:grid.9132.9) (ISNI:0000 0001 2156 142X); Yerevan Physics Institute, Yerevan-36, Armenia (GRID:grid.48507.3e) (ISNI:0000 0004 0482 7128); Institute for Theoretical Physics and Modeling, Yerevan-36, Armenia (GRID:grid.48507.3e)
3 Istituto Nazionale di Fisica Nucleare (INFN), Milano, Italy (GRID:grid.48507.3e)