Demonstration of neutron identification in neutrino interactions in the MicroBooNE liquid argon time projection chamber
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10052_2024_Article_13423.pdf
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Author(s)
Abratenko, P.
Alterkait, O.
Aldana, D. A.
Arellano, L.
Asaadi, J.
Ashkenazi, A.
Balasubramanian, S.
Baller, B.
Barnard, A.
Barr, G.
Date Issued
October 14, 2024
Journal
The European Physical Journal C
Publisher
Springer Berlin Heidelberg
Citation
The MicroBooNE Collaboration., Abratenko, P., Alterkait, O. et al. Demonstration of neutron identification in neutrino interactions in the MicroBooNE liquid argon time projection chamber. Eur. Phys. J. C 84, 1052 (2024).
Version
Final published version
Abstract
A significant challenge in measurements of neutrino oscillations is reconstructing the incoming neutrino energies. While modern fully-active tracking calorimeters such as liquid argon time projection chambers in principle allow the measurement of all final state particles above some detection threshold, undetected neutrons remain a considerable source of missing energy with little to no data constraining their production rates and kinematics. We present the first demonstration of tagging neutrino-induced neutrons in liquid argon time projection chambers using secondary protons emitted from neutron-argon interactions in the MicroBooNE detector. We describe the method developed to identify neutrino-induced neutrons and demonstrate its performance using neutrons produced in muon-neutrino charged current interactions. The method is validated using a small subset of MicroBooNE’s total dataset. The selection yields a sample with 60 % of selected tracks corresponding to neutron-induced secondary protons. At this purity, the integrated efficiency is 8.4% for neutrons that produce a detectable proton.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1140/epjc/s10052-024-13423-z
