EPJ Web of Conferences (Jan 2021)

Graph Variational Autoencoder for Detector Reconstruction and Fast Simulation in High-Energy Physics

  • Hariri Ali,
  • Dyachkova Darya,
  • Gleyzer Sergei

DOI
https://doi.org/10.1051/epjconf/202125103051
Journal volume & issue
Vol. 251
p. 03051

Abstract

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Accurate and fast simulation of particle physics processes is crucial for the high-energy physics community. Simulating particle interactions with the detector is both time consuming and computationally expensive. With its proton-proton collision energy of 13 TeV, the Large Hadron Collider is uniquely positioned to detect and measure the rare phenomena that can shape our knowledge of new interactions. The High-Luminosity Large Hadron Collider (HLLHC) upgrade will put a significant strain on the computing infrastructure and budget due to increased event rate and levels of pile-up. Simulation of highenergy physics collisions needs to be significantly faster without sacrificing the physics accuracy. Machine learning approaches can offer faster solutions, while maintaining a high level of fidelity. We introduce a graph generative model that provides effiective reconstruction of LHC events on the level of calorimeter deposits and tracks, paving the way for full detector level fast simulation.