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Title: Reconstruction and measurement of $$\mathcal{O}$$ (100) MeV energy electromagnetic activity from π0 arrow γγ decays in the MicroBooNE LArTPC

Journal Article · · Journal of Instrumentation
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We present results on the reconstruction of electromagnetic (EM) activity from photons produced in charged current νμ interactions with final state π0s. We employ a fully-automated reconstruction chain capable of identifying EM showers of Script O(100) MeV energy, relying on a combination of traditional reconstruction techniques together with novel machine-learning approaches. These studies demonstrate good energy resolution, and good agreement between data and simulation, relying on the reconstructed invariant π0 mass and other photon distributions for validation. The reconstruction techniques developed are applied to a selection of νμ + Ar → μ + π0 + X candidate events to demonstrate the potential for calorimetric separation of photons from electrons and reconstruction of π0 kinematics.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Harvard Univ., Cambridge, MA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE Office of Science (SC); USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
MicroBooNE Collaboration
Grant/Contract Number:
AC02-05CH11231; AC02-76SF00515; SC0007859; SC0007881; SC0012704
OSTI ID:
1616110
Report Number(s):
BNL--213683-2020-JAAM; ark:/13030/qt53f5z9vb
Journal Information:
Journal of Instrumentation, Journal Name: Journal of Instrumentation Journal Issue: 02 Vol. 15; ISSN 1748-0221
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

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Design and construction of the MicroBooNE detector journal February 2017
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Michel electron reconstruction using cosmic-ray data from the MicroBooNE LArTPC journal September 2017
Ionization electron signal processing in single phase LArTPCs. Part I. Algorithm Description and quantitative evaluation with MicroBooNE simulation journal July 2018
Ionization electron signal processing in single phase LArTPCs. Part II. Data/simulation comparison and performance in MicroBooNE journal July 2018
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First measurement of ν μ charged-current π 0 production on argon with the MicroBooNE detector journal May 2019
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS