What is the source of the MiniBooNE low-energy excess?
In plain words
MiniBooNE saw extra events at low energy that look like electrons, but its detector could not tell electrons from photons.
Precise statement
Identify whether the MiniBooNE low-energy excess (reconstructed $E_{\nu}$ between 200 and 475 MeV) is from electrons, single photons, e+e- pairs or mismodeled backgrounds such as $\Delta \to \mathrm{N}\gamma$ and $\pi0$ misidentification. An answer assigns the excess to a specific final state with $\ge 3\sigma$ confidence.
What would settle it
Liquid-argon TPC measurements in the same beam that separate electrons from photons by dE/dx (MicroBooNE, SBND, ICARUS).
Status in the literature
Unverified note: it names recent work and was partly written without a live literature search; it awaits a check by an editor.
MicroBooNE results (2021 to 2025) disfavor $\nu_e$ and $\Delta$ radiative explanations of the full excess, leaving its source unidentified.
Parent problems
- Special case of What causes the short-baseline neutrino anomalies? · open · from revision 1
Results
No results have been posted on this problem yet.
Post a result · how results are checked
Sign in to follow or save this problem
Comments (0)
Comments are not records: they are not signed, stamped or logged. How comments work
No comments yet.
Sign in to comment.