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Search for an Excess of Electron Neutrino Interactions in MicroBooNE Using Multiple Final-State Topologies.
P Abratenko1, R An2, J Anthony3
1Tufts University, Medford, Massachusetts 02155, USA.
Physical Review Letters
|July 1, 2022
Summary
MicroBooNE searched for electron neutrino (ν_{e}) interactions to investigate a previously observed excess. The experiment found no excess of ν_{e} events, with results consistent with or lower than expected rates.
Area of Science:
- Particle Physics
- Neutrino Physics
- Experimental Physics
Background:
- An excess of low-energy interactions was observed by the MiniBooNE Collaboration.
- The nature of this excess, potentially indicating electron neutrino (ν_{e}) interactions, requires further investigation.
Purpose of the Study:
- To measure electron neutrino (ν_{e}) interactions using the MicroBooNE detector.
- To determine if the observed excess of low-energy events is due to ν_{e} interactions.
Main Methods:
- Utilized the MicroBooNE liquid argon time projection chamber and the Fermilab Booster Neutrino Beam.
- Performed three independent ν_{e} searches focusing on single electron final states: exclusive, semi-inclusive, and fully inclusive.
Main Results:
- No excess of electron neutrino (ν_{e}) events was observed.
- Measurements were consistent with or modestly lower than expected ν_{e} rates from the Booster Neutrino Beam.
Conclusions:
- The MicroBooNE results do not support an excess of electron neutrino (ν_{e}) interactions as the explanation for the MiniBooNE observation.
- Further analysis and cross-detector comparisons are valuable for understanding neutrino anomalies.
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