Cosmic Ray Background Rejection with Wire-Cell LArTPC Event Reconstruction in the MicroBooNE Detector
Name
PhysRevApplied.15.064071.pdf
Description
Published version
Size
7.36 MB
Format
Adobe PDF
Checksum (MD5)
c7f9f52dc22c2bd4dd5cb1401d2c0e65
Author(s)
Conrad, Janet
Date Issued
2021
Journal
Physical Review Applied
Publisher
American Physical Society (APS)
Citation
Conrad, Janet. 2021. "Cosmic Ray Background Rejection with Wire-Cell LArTPC Event Reconstruction in the MicroBooNE Detector." Physical Review Applied, 15 (6).
Version
Final published version
Abstract
For a large liquid argon time projection chamber (LArTPC) operating on or
near the Earth's surface to detect neutrino interactions, the rejection of
cosmogenic background is a critical and challenging task because of the large
cosmic ray flux and the long drift time of the TPC. We introduce a superior
cosmic background rejection procedure based on the Wire-Cell three-dimensional
(3D) event reconstruction for LArTPCs. From an initial 1:20,000 neutrino to
cosmic-ray background ratio, we demonstrate these tools on data from the
MicroBooNE experiment and create a high performance generic neutrino event
selection with a cosmic contamination of 14.9\% (9.7\%) for a visible energy
region greater than O(200)~MeV. The neutrino interaction selection efficiency
is 80.4\% and 87.6\% for inclusive $\nu_\mu$ charged-current and $\nu_e$
charged-current interactions, respectively. This significantly improved
performance compared to existing reconstruction algorithms, marks a major
milestone toward reaching the scientific goals of LArTPC neutrino oscillation
experiments operating near the Earth's surface.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PHYSREVAPPLIED.15.064071
