Search for an Anomalous Excess in Neutrino-Induced Interactions in the MicroBooNE Liquid Argon Time Projection Chamber

ORAL  · Invited

Abstract

The MicroBooNE experiment was designed primarily to explore the nature of the previously observed low-energy excess in electron neutrino candidates in the MiniBooNE experiment located in the Booster Neutrino Beamline at Fermi National Accelerator Laboratory. Using an 85-ton active volume Liquid Argon Time Projection Chamber with its excellent electron versus photon separation capability, the MicroBooNE experiment searches for an anomalous excess with an electromagnetic signature in several neutrino-induced interaction channels. In this talk, I will report the search results based on data taken from February 2016 to July 2018 in several exclusive and inclusive charged-current electron neutrino-induced interaction channels as well as a neutral-current Δ radiative decay channel.

*The results reported in this talk was prepared by the MicroBooNE collaboration using the resources of the Fermi National Accelerator Laboratory (Fermilab), a U.S. Department of Energy, Office of Science, HEP User Facility. Fermilab is managed by Fermi Research Alliance, LLC (FRA), acting under Contract No. DE-AC02-07CH11359. MicroBooNE is supported by the following: the U.S. Department of Energy, Office of Science, Offices of High Energy Physics and Nuclear Physics; the U.S. National Science Foundation; the Swiss National Science Foundation; the Science and Technology Facilities Council (STFC), part of the United Kingdom Research and Innovation; the Royal Society (United Kingdom); and The European Union's Horizon 2020 Marie Sklodowska-Curie Actions. Additional support for the laser calibration system and cosmic-ray tagger was provided by the Albert Einstein Center for Fundamental Physics, Bern, Switzerland.

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Publication: 1. "Search for an Excess of Electron Neutrino Interactions in MicroBooNE using Multiple Final State Topologies", MicroBooNE collaboration, arXiv:2110.14054 (2021).
2. "Search for an Anomalous Excess of Inclusive Charged-Current νe Interactions in the MicroBooNE Experiment using Wire-Cell reconstruction", MicroBooNE collaboration, arXiv:2110.13978 (2021).
3. "Search for an Anomalous Excess of Charged-Current νe Interactions Without Pions in the Final State with the MicroBooNE experiment", MicroBooNE collaboration, arXiv:2110.14065 (2021).
4. "Search for an Anomalous Excess of Charged-Current Quasi-Elastic νe Interactions with the MicroBooNE experiment using Deep-Learning-based Reconstruction", arXiv:2110.14080 (2021).
5. "Search for Neutrino-induced Neutral Current Delta Radiative Decay in MicroBooNE and a First Test of the MiniBooNE Low Energy Excess Under a Single-Photon Hypothesis", arXiv:2110.00409 (2021).

Presenters

  • Xin Qian

    • Brookhaven National Laboratory

Authors

  • Xin Qian

    • Brookhaven National Laboratory