PCN: a deep learning approach to jet tagging utilizing novel graph construction methods and Chebyshev graph convolutions
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13130_2024_Article_24084.pdf
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Author(s)
Semlani, Yash
Relan, Mihir
Ramesh, Krithik
Date Issued
July 26, 2024
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
Semlani, Y., Relan, M. & Ramesh, K. PCN: a deep learning approach to jet tagging utilizing novel graph construction methods and Chebyshev graph convolutions. J. High Energ. Phys. 2024, 247 (2024).
Version
Final published version
Abstract
Jet tagging is a classification problem in high-energy physics experiments that aims to identify the collimated sprays of subatomic particles, jets, from particle collisions and ‘tag’ them to their emitter particle. Advances in jet tagging present opportunities for searches of new physics beyond the Standard Model. Current approaches use deep learning to uncover hidden patterns in complex collision data. However, the representation of jets as inputs to a deep learning model have been varied, and often, informative features are withheld from models. In this study, we propose a graph-based representation of a jet that encodes the most information possible. To learn best from this representation, we design Particle Chebyshev Network (PCN), a graph neural network (GNN) using Chebyshev graph convolutions (ChebConv). ChebConv has been demonstrated as an effective alternative to classical graph convolutions in GNNs and has yet to be explored in jet tagging. PCN achieves a substantial improvement in accuracy over existing taggers and opens the door to future studies into graph-based representations of jets and ChebConv layers in high-energy physics experiments. Code is available at https://github.com/YVSemlani/PCN-Jet-Tagging
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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DOI of Published Version
https://doi.org/10.1007/jhep07(2024)247
