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PELICAN: Permutation Equivariant and Lorentz Invariant or Covariant Aggregator Network for Particle Physics

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arxiv 2211.00454 v2 pith:EEENM4US submitted 2022-11-01 hep-ph cs.LGhep-ex

PELICAN: Permutation Equivariant and Lorentz Invariant or Covariant Aggregator Network for Particle Physics

classification hep-ph cs.LGhep-ex
keywords networkphysicsarchitecturelearninglorentzmachineparticletask
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Many current approaches to machine learning in particle physics use generic architectures that require large numbers of parameters and disregard underlying physics principles, limiting their applicability as scientific modeling tools. In this work, we present a machine learning architecture that uses a set of inputs maximally reduced with respect to the full 6-dimensional Lorentz symmetry, and is fully permutation-equivariant throughout. We study the application of this network architecture to the standard task of top quark tagging and show that the resulting network outperforms all existing competitors despite much lower model complexity. In addition, we present a Lorentz-covariant variant of the same network applied to a 4-momentum regression task.

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Cited by 5 Pith papers

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