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  3. Inclusive Search For Anomalous Single-photon Production In Microboone.
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  3. Inclusive Search For Anomalous Single-photon Production In Microboone.

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Using Synchrotron Radiation Microtomography to Investigate Multi-scale Three-dimensional Microelectronic Packages
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Published on: April 13, 2016

Inclusive Search for Anomalous Single-Photon Production in MicroBooNE.

P Abratenko1, D Andrade Aldana2, L Arellano3

  • 1Tufts University, Medford, Massachusetts 02155, USA.

Physical Review Letters
|May 22, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

The MicroBooNE experiment searched for single-photon events from neutrino interactions, motivated by a previous anomaly. While the overall data agreed with predictions, a subsample showed a slight excess of events at low energies.

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Area of Science:

  • Particle Physics
  • Experimental Neutrino Physics

Background:

  • Previous observation of a low-energy excess of electromagnetic shower events by the MiniBooNE experiment.
  • Motivated an inclusive search for anomalous single-photon production in neutrino interactions.

Purpose of the Study:

  • To search for anomalous single-photon production in neutrino interactions.
  • To investigate the MiniBooNE low-energy excess anomaly.

Main Methods:

  • Utilized the Wire-Cell reconstruction framework to select single-photon final-state interactions.
  • Employed simultaneous measurements of charged current and neutral current sidebands to constrain background predictions.
  • Performed a blind analysis on data collected from February 2016 to July 2018 (6.34×10^20 POT).

Main Results:

  • Observed agreement between data and predictions in the full signal region (p-value = 0.11).
  • Identified a subsample with no visible protons, revealing 93±22(stat)±35(syst) events above prediction.
  • This subsample excess, concentrated below 600 MeV, reached a local significance of just over 2σ.

Conclusions:

  • The inclusive search for single-photon events did not reveal a significant anomaly in the full signal region.
  • A localized excess in a specific subsample warrants further investigation, potentially related to the MiniBooNE anomaly.