A new analysis of the MiniBooNE low-energy excess

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 ${\Delta }^{+/0}$ decay proposed in arXiv:1909.08571 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 $5.1\sigma$ to $3.6\sigma$. 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.

arXiv comment7 pages. We corrected Table 2 and Figures 3 and 4, with respect to the version published in JHEP 11 (2020) 146

References in corpus (32)

• Sterile Neutrino Oscillations: The Global Picture
• Updated global analysis of neutrino oscillations in the presence of eV-scale sterile neutrinos
• Are there sterile neutrinos at the eV scale?
• Updated Global 3+1 Analysis of Short-BaseLine Neutrino Oscillations
• Pragmatic View of Short-Baseline Neutrino Oscillations
• Neutrino mass spectrum from the results of neutrino oscillation experiments
• Dark Neutrino Portal to Explain MiniBooNE excess
• Status of Light Sterile Neutrino Searches
• 3+1 and 3+2 Sterile Neutrino Fits
• eV-scale Sterile Neutrinos
• A sterile neutrino scenario constrained by experiments and cosmology
• Light sterile neutrinos
• Where Are We With Light Sterile Neutrinos?
• U(1)' mediated decays of heavy sterile neutrinos in MiniBooNE
• Implications of 3+1 Short-Baseline Neutrino Oscillations
• Sterile Neutrinos: Cosmology vs Short-BaseLine Experiments
• Status of 3+1 Neutrino Mixing
• Testing New Physics Explanations of MiniBooNE Anomaly at Neutrino Scattering Experiments
• Photoproduction of pi0-mesons from nuclei
• Model-Independent ${\bar{\nu }}_e$ Short-Baseline Oscillations from Reactor Spectral Ratios
• Sterile Neutrinos or Flux Uncertainties? - Status of the Reactor Anti-Neutrino Anomaly
• Testing 3+1 and 3+2 neutrino mass models with cosmology and short baseline experiments
• On the single photon background to nu_e appearance at MiniBooNE
• Single photon events from neutral current interactions at MiniBooNE
• Can neutrino-induced photon production explain the low energy excess in MiniBooNE?
• Reevaluating Reactor Antineutrino Anomalies with Updated Flux Predictions
• Surface and volume effects in the photoabsorption of nuclei
• Statistical Significance of Reactor Antineutrino Active-Sterile Oscillations
• Icecube/DeepCore tests for novel explanations of the MiniBooNE anomaly
• KATRIN bound on 3+1 active-sterile neutrino mixing and the reactor antineutrino anomaly
• Photoproduction of mesons from nuclei - In-medium properties of hadrons
• Assessing the role of nuclear effects in the interpretation of the MiniBooNE low-energy anomaly

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