Jul 4 – 11, 2018
Asia/Seoul timezone

Light meson decays at BESIII

Jul 7, 2018, 4:55 PM
101 (COEX, Seoul)


COEX, Seoul

Parallel Strong Interactions and Hadron Physics Strong Interactions and Hadron Physics


guofa xu (Institute of High Energy Physics)


At present the world's largest sample of 1.3 billion J/psi decay has been collected by the BESIII detector, which provides a unique opportunity to investigate light meson decays. The $a^0(980)-f^0(980)$ mixing is an important probe to the nature of those two light scalars. The first observation of $a^0(980)-f^0(980)$ mixing will be reported. The $\eta$ and $\eta'$ hadronic decays are sensitive tools for the investigations of $\pi-\pi$ and $\eta-\pi$ interactions, symmetry breaking, and for testing the Chiral Perturbation Theory. In this talk, BESIII presents new results on amplitude analyses of the Dalitz decays $\eta'\to 3 \pi; \eta' \to \eta \pi \pi, \eta'\to \gamma \pi \pi$, on the observation of new decay modes and on searches for rare or forbidden decays.

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