Development of machine learning analyses with graph neural network for the WASA-FRS experiment
EUROPEAN PHYSICAL JOURNAL A(2023)
Abstract
The WASA-FRS experiment aims to reveal the nature of light Λ hypernuclei with heavy-ion beams. The lifetimes of hypernuclei are measured precisely from their decay lengths and kinematics. To reconstruct a π ^- track emitted from hypernuclear decay, track finding is an important issue. In this study, a machine learning analysis method with a graph neural network (GNN), which is a powerful tool for deducing the connection between data nodes, was developed to obtain track associations from numerous combinations of hit information provided in detectors based on a Monte Carlo simulation. An efficiency of 98
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Key words
neural network,machine learning,graph,wasa-frs
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