Optimised Graph Convolution for Calorimetry Event Classification

Laboratoire Leprince-Ringuet, École polytechnique - CNRS, Institut Polytechnique de Paris, Palaiseau, France

^* e-mail: matthieu.melennec@llr.in2p3.fr
^** e-mail: shamik.ghosh@llr.in2p3.fr
^*** e-mail: frederic.magniette@llr.in2p3.fr

Published online: 7 October 2025

Abstract

In the recent years, high energy physics discoveries have been driven by the increasing of luminosity and/or detector granularity. This evolution gives access to bigger statistics and data samples, but can make it hard to process the detector outputs with current methods and algorithms. Graph convolution networks, have been shown to be powerful tools to address these challenges. We present our graph convolution framework for particle identification and energy regression in high granularity calorimeters. In particular, we introduce our algorithm for optimised graph construction in resource constrained environments. We also introduce our implementation of graph convolution and pooling layers. We observe satisfying accuracies, and discuss possible application to other high granularity particle detector challenges.