Reconstruction and measurement of (100) MeV energy electromagnetic activity from π 0 arrow γγ decays in the MicroBooNE LArTPC

Alrashed, M. and An, R. and Anthony, J. and Asaadi, J. and Ashkenazi, A. and Balasubramanian, S. and Baller, B. and Barnes, C. and Barr, G. and Basque, V. and Bass, M. and Bay, F. and Berkman, S. and Bhanderi, A. and Bhat, A. and Bishai, M. and Blake, A. and Bolton, T. and Camilleri, L. and Caratelli, D. and Terrazas, I. Caro and Fernandez, R. Castillo and Cavanna, F. and Cerati, G. and Church, E. and Cianci, D. and Cohen, E. O. and Conrad, J. M. and Convery, M. and Cooper-Troendle, L. and Crespo-Anadon, J. I. and Tutto, M. Del and Devitt, D. and Diaz, A. and Domine, L. and Duffy, K. and Dytman, S. and Eberly, B. and Ereditato, A. and Sanchez, L. Escudero and Esquivel, J. and Fitzpatrick, R. S. and Fleming, B. T. and Foppiani, N. and Franco, D. and Furmanski, A. P. and Garcia-Gamez, D. and Lister, A. and Nowak, J. (2020) Reconstruction and measurement of (100) MeV energy electromagnetic activity from π 0 arrow γγ decays in the MicroBooNE LArTPC. Journal of Instrumentation, 15 (2). ISSN 1748-0221

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We present results on the reconstruction of electromagnetic (EM) activity from photons produced in charged current ν μ interactions with final state π 0s. We employ a fully-automated reconstruction chain capable of identifying EM showers of (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 π 0 mass and other photon distributions for validation. The reconstruction techniques developed are applied to a selection of ν μ + Ar → μ + π 0 + X candidate events to demonstrate the potential for calorimetric separation of photons from electrons and reconstruction of π 0 kinematics.

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Journal Article
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Journal of Instrumentation
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This is an author-created, un-copyedited version of an article accepted for publication/published in Journal of Instrumentation. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi:10.1088/1748-0221/15/02/P02007
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11 Feb 2020 16:25
Last Modified:
15 Apr 2020 06:34