Speaker
Chengwei Wang
(Nanjing University)
Description
Based on the 225 million $J/\psi$ data set accumulated at the 3.097 GeV by the BESIII detector, we show searches for the extremely rare process of $J/\psi$ weak decays. We find no obvious signal event for the processes of $J/\psi\to \bar D^0\pi^0, \bar D^0 \eta, \bar D^0 \rho^0, D^-\pi^+$ and $J/\psi \to D^-\rho^+$ and present the most stringent constraints of $10^{-6}$ at 90\% confidence level. Furthermore, the result of $J/psi\to D^-e^+\nu_e +c.c.$ with 10 billion newly collected $J/\psi$ data and some other prospect results are also presented.
Primary author
Chengwei Wang
(Nanjing University)
