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TIGER — Topology-agnostic Event Reconstruction
A graph network that reconstructs LHC decay chains without being told the event topology. The only structure built in is that particles decay in up to two stages of two-body decays.
Key result
One architecture,
any topology
The only structure built in is two stages of two-body decays, with no process-specific assumptions. The same architecture reconstructs fully hadronic top-pair events and semi-leptonic top-pair plus Higgs events and separates signal from background, with higher purity than the topology-specific baselines (HyPER, SPANet).
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