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Distinguished Visitor Talk - Professor Qiang Zhao, IEHP Beijing
Monday, 16 August, 2:00 PM
Site event
Title: Puzzles in charmonium decays
Abstract:
I will report the progress on understanding some of those existing puzzles in charmonium decays. It will be shown that the intermediate meson loops (IML) as a long-distance transition mechanism evading the Okubo-Zweig-Iizuka (OZI) rule, would provide novel insights into these issues. In particular, the IML mechanism would be essentially important for understanding some of those long-standing puzzles in the charm sector, such as the $\psi(3770)$ non-$D\bar{D}$ decays, "$\rho-\pi$ puzzle", and $J/\psi$ and $\psi^\prime$'s M1 transitions, etc. The forthcoming high-statistic data from BESIII collaboration will be able to examine such a mechanism in experiment.
Abstract:
I will report the progress on understanding some of those existing puzzles in charmonium decays. It will be shown that the intermediate meson loops (IML) as a long-distance transition mechanism evading the Okubo-Zweig-Iizuka (OZI) rule, would provide novel insights into these issues. In particular, the IML mechanism would be essentially important for understanding some of those long-standing puzzles in the charm sector, such as the $\psi(3770)$ non-$D\bar{D}$ decays, "$\rho-\pi$ puzzle", and $J/\psi$ and $\psi^\prime$'s M1 transitions, etc. The forthcoming high-statistic data from BESIII collaboration will be able to examine such a mechanism in experiment.
