Classification of muon tracks from charmonium decays and pion tracks in the model of the SPD detector using neural networks

Additional data

Submitted: 11.02.2026; Accepted: 15.06.2026; Published 26.06.2026;
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How to Cite

A. R. Didenko, I. V. Yeletskikh, A. O. Gridin "Classification of muon tracks from charmonium decays and pion tracks in the model of the SPD detector using neural networks" Natural Sci. Rev. 3 100705 (2026)
https://doi.org/10.54546/NaturalSciRev.100705
A. R. Didenko1,2,a, I. V. Yeletskikh1,b, A. O. Gridin1,c
  • 1Joint Institute for Nuclear Research, Dubna, 141980, Russia
  • 2Lomonosov Moscow State University, Moscow, 119991, Russia
  • aalisadidenko@jinr.ru
  • bivaneleckih@jinr.ru
  • candreigridin@jinr.ru
DOI: 10.54546/NaturalSciRev.100705
Keywords: muon identification, machine learning, evolutionary algorithm, DNN, SPD
Topics: Physics , Instruments and Methods , Mathematical and Computer Sciences
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Abstract

The Machine Learning (ML) approaches were applied to particle identification in the simulation of the Spin Physics Detector (SPD) at the NICA Collider. The results of the identification of muon tracks originating from charmonia decays and pion tracks in the intermediate momenta region (1.5–2.5 GeV/c) are presented. The obtained classifier accuracy is 77% while preserving 99% of muons and rejecting 48% of pions. The efficiency of developed binary classifier is demonstrated through background suppression in J/ψµµ decays.

References

[1] SPD Collaboration, Technical Design Report of the Spin Physics Detector at NICA, Natural Sci.Rev. 1 (1) (2024). doi:10.48550/arXiv.2404.08317.

[2] SPD Collaboration, SPDRoot, https://spd.jinr.ru/spd-software/.

[3] L. J. Fogel, A. J. Owens, and M. J. Walsh, Artificial Intelligence through Simulated Evolution, New York, 1966.

[4] J. H. Holland, Adaptation in Natural and Artificial Systems: An Introductory Analysis with Applications to Biology, Control, and Artificial Intelligence, 1975. doi:https://doi.org/10.7551/mitpress/1090.001.0001.

[5] F. Chollet et al., Keras: The Python Deep Learning Library, https://keras.io/, accessed: 2018-06.