6–10 Nov 2023
DESY
Europe/Zurich timezone

Set2Tree: Particle decay reconstruction via GNN

6 Nov 2023, 14:30
15m
Seminarraum 4a/b

Seminarraum 4a/b

Speaker

Dmitrii Kobylianskii (Weizmann Institute of Science (IL))

Description

Tree structure is a natural way to represent particle decays in high energy physics. The possibility of reconstructing the entire decay tree that ends in stable particles entering the detector is an interesting and potentially beneficial task. [The interesting and extremely helpful task is to reconstruct the entire decay process, starting from the leaf nodes, which are the reconstructed particles.] We propose a graph-based neural network for tree reconstruction using truth-level particles as a starting point. The proposed model’s performance was evaluated on the toy Phasespace dataset and realistic Pythia8 simulations of light quark decay chains.

Author

Dmitrii Kobylianskii (Weizmann Institute of Science (IL))

Co-authors

Eilam Gross (Weizmann Institute of Science (IL)) Etienne Dreyer (Weizmann Institute of Science (IL)) Mr Junjian Lu (MBUZAI) Dr Shangsong Liang (MBUZAI) Mr Siwei Liu (MBUZAI)

Presentation materials