Light meson decays and spectroscopy at BESIII

by Fang Shuangshi (IHEP)

Thursday 22 Aug 2019, 14:00 → 15:00 Europe/Stockholm

Beurlingrummet (Ångstrom)

The J/psi radiative decays are an ideal place to study the light meson spectroscopy. BESIII collected 10 billion J/psi events, which is the world’s largest sample produced from the e+e- annihilations.  In this talk an overview on the recent progresses on the light meson spectroscopy will be presented, including partial wave analysis of the exclusive J/psi radiative decays, the anomalous shape observed in J/psi radiative decays to p anti-p and γη'π+π- and the strange mesons in J/psi hadronic decays.
Due to the high production probability of light mesons in J/psi decays, the huge data sample of J/psi events at BESIII also offer an opportunity to investigate the light meson decays to test the Chiral Perturbation Theory and other theoretical models. In recent years a series of important results on η/η’, omega and eta(1405) achieved at BESIII experiment will be presented.