Jun 5 – 9, 2023
Genova, Italy
Europe/Rome timezone

Light Meson decays at BESIII

Jun 6, 2023, 3:36 PM
DAD - Room 5H (Genova, Italy)

DAD - Room 5H

Genova, Italy

Contributed Hadron decays, production and interactions Hadron decays, production and interaction


Ilaria Balossino (Istituto Nazionale di Fisica Nucleare)


The world’s largest sample of J/ψ events accumulated at the BESIII detector offers a unique opportunity to investigate η and η′ physics via two body J/ψ radiative or hadronic decays. In recent years the BESIII experiment has made significant progresses in η/η′ decays. A selection of recent highlights in light meson spectroscopy at BESIII are reviewed in this report, including the observation of η′ → π+π−μ+μ−, observation of the cusp effect in η′ →π0π0η, search for CP-violation in η′ → π+π−e+e−, as well as the precision measurement of the branching fraction of η decays.

Primary author

Beijiang Liu (Institute of High Energy Physics)


Ilaria Balossino (Istituto Nazionale di Fisica Nucleare)

Presentation materials