Testing the Predictions of the Chiral Anomaly in the COMPASS and AMBER Experiments

by Andrii Maltsev

Thursday 16 Nov 2023, 09:30 → 11:00 Europe/Berlin

E18 Seminar Room

Quantum chromodynamics (QCD) is now widely regarded as the underlying theory of the strong interaction. Its predictions have been successfully tested many times for high energy interactions, usually using perturbation series in the strong coupling α$_s$. However, at low energies, where α$_s$ is of the order of one, the standard perturbation series in αs can no longer be used. Some phenomenological models, which were developed for this goal, utilize the chiral anomaly, the fundamental property of QCD. Testing the predictions of such models in processes involving pseudoscalar mesons π, K, η is important for understanding of the low-energy interactions of hadrons.  

In this talk, the main predictions of the models based on the chiral anomaly are presented. The status of the ongoing measurements at the COMPASS experiment, such as the F3π and Fηππγ measurements, is discussed and the prospects for future measurements at the AMBER experiment are presented.