1. Reconstructing particles in jets using set transformer and hypergraph prediction networks.
- Author
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Di Bello, Francesco Armando, Dreyer, Etienne, Ganguly, Sanmay, Gross, Eilam, Heinrich, Lukas, Ivina, Anna, Kado, Marumi, Kakati, Nilotpal, Santi, Lorenzo, Shlomi, Jonathan, and Tusoni, Matteo
- Subjects
COLLISIONS (Nuclear physics) ,HYPERFRAGMENTS ,DETECTORS ,FEYNMAN diagrams - Abstract
The task of reconstructing particles from low-level detector response data to predict the set of final state particles in collision events represents a set-to-set prediction task requiring the use of multiple features and their correlations in the input data. We deploy three separate set-to-set neural network architectures to reconstruct particles in events containing a single jet in a fully-simulated calorimeter. Performance is evaluated in terms of particle reconstruction quality, properties regression, and jet-level metrics. The results demonstrate that such a high-dimensional end-to-end approach succeeds in surpassing basic parametric approaches in disentangling individual neutral particles inside of jets and optimizing the use of complementary detector information. In particular, the performance comparison favors a novel architecture based on learning hypergraph structure, HGPflow, which benefits from a physically-interpretable approach to particle reconstruction. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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