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HK: Fachverband Physik der Hadronen und Kerne

HK 32: Hadron Structure and Spectroscopy VI

HK 32.1: Gruppenbericht

Dienstag, 29. März 2022, 16:00–16:30, HK-H9

The ComPWA project: amplitude analysis with symbolic expressions and multiple computational backends — •Remco de Boer¹, Miriam Fritsch¹, Klaus Götzen³, Wolfgang Gradl², Sebastian Jäger¹, Mathias Michel², Klaus Peters³, Stefan Pflüger¹, Peter Weidenkaff², and Leonard Wollenberg¹ — ¹Ruhr-Universität Bochum — ²Johannes Gutenberg Universität Mainz — ³GSI Helmholtzzentrum Darmstadt

The search for conventional and exotic hadronic states is a challenging endeavour that has seen significant progress in the past decade. One of the most important techniques for identifying and classifying these states is Partial Wave Analysis. PWA is, however, notoriously difficult, as it requires a thorough understanding of several aspects in particle physics, as well as High Performance Computing. The ComPWA project makes PWA easier to understand and implement with a collection of modern Python libraries. One of the highlights of the project is the ability to express amplitude models as symbolic mathematical formulas that can be inspected and adapted to the specific requirements of an analysis. These expressions not only offer a comprehensible experience of analysing a particle reaction, but also serve as templates to computational backends like TensorFlow that can efficiently fit the model to large data samples.