Does Lorentz-symmetric design boost network performance in jet physics?

Abstract

In the deep learning era, improving the neural network performance in jet physics is a rewarding task as it directly contributes to more accurate physics measurements at the LHC. Recent research has proposed various network designs in consideration of the full Lorentz symmetry, but its benefit is still not systematically asserted, given that there remain many successful networks without taking it into account. We conduct a detailed study on the Lorentz-symmetric design. We propose two generalized approaches for modifying a network - these methods are experimented on Particle Flow Network, ParticleNet, and LorentzNet, and exhibit a general performance gain. We also reveal that the notable improvement attributed to the "pairwise mass" feature in the network is due to its introduction of a structure that fully complies with Lorentz symmetry. We confirm that Lorentz-symmetry preservation serves as a strong inductive bias of jet physics, hence calling for attention to such general recipes in future network designs.

16 pages, 7 figures

References in corpus (8)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Lorentz Boost Networks: Autonomous Physics-Inspired Feature Engineering
• Search for Higgs boson decay to a charm quark-antiquark pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Lorentz group equivariant autoencoders
• Jet tagging algorithm of graph network with HaarPooling message passing
• A Holistic Approach to Predicting Top Quark Kinematic Properties with the Covariant Particle Transformer
• BIP: Boost Invariant Polynomials for Efficient Jet Tagging

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• jBOT: Semantic Jet Representation Clustering Emerges from Self-Distillation