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Dark Neutrino Portal to Explain MiniBooNE Excess.

Enrico Bertuzzo1, Sudip Jana2,3, Pedro A N Machado3

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A new dark sector model explains excess electronlike events observed in the MiniBooNE experiment. This model involves dark neutrinos and dark gauge bosons, fitting experimental data well.

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Area of Science:

  • Particle Physics
  • Experimental Physics
  • Cosmology

Background:

  • The MiniBooNE experiment at Fermilab has observed an unexplained excess of electronlike events.
  • This anomaly has persisted for years, prompting theoretical investigations.

Purpose of the Study:

  • To propose a novel theoretical framework explaining the excess electronlike events in the MiniBooNE experiment.
  • To introduce a new dark sector comprising dark neutrinos and dark gauge bosons.

Main Methods:

  • Development of a theoretical model involving dark sector particles.
  • Analysis of neutrino-nucleus scattering and subsequent particle decays.
  • Comparison of model predictions with MiniBooNE experimental data, including energy spectra and angular distributions.

Main Results:

  • The proposed dark sector mechanism successfully explains the observed excess of electronlike events.
  • The model predicts dark neutrino and dark gauge boson masses in the range of tens to hundreds of MeV.
  • The mechanism provides an excellent fit to the MiniBooNE energy and angular data.

Conclusions:

  • The novel dark sector framework offers a compelling explanation for the MiniBooNE anomaly.
  • This research opens new avenues for exploring dark sector physics and its potential connections to neutrino anomalies.
  • Further experimental and theoretical work is needed to validate the existence and properties of these dark sector particles.