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HK: Fachverband Physik der Hadronen und Kerne

HK 29: Hadron Structure and Spectroscopy VI

HK 29.5: Vortrag

Freitag, 3. September 2021, 15:15–15:30, H3

Analysis of Light Isovector Resonances in the Diffractively Produced π⁻π⁻π⁺ Final State at COMPASS — •Florian Kaspar for the COMPASS collaboration — Technische Universität München, Garching bei München, Deutschland

The COMPASS experiment at CERN can help us to better understand the excitation spectrum of light-quark meson resonances, which consist of up, down, or strange quarks. COMPASS collected a world-leading sample of diffractively produced π⁻π⁻π⁺ events. We present our improved analysis of the isovector resonances accessible in this data, where we studied in particular systematic effects in the partial-wave analysis of this final state. In addition, we will discuss our new results focusing on the J^PC=0⁻⁺ sector that contains the π(1800) resonance.