Speaker
Dr
Minggang Zhao
(Nankai University)
Description
The charged Lepton Flavor Violation (cLFV) is highly suppressed in the Standard Model (SM) by the finite but tiny neutrino masses. Its branching fraction is calculated to be at a negligible level and so far none has been found in all the historical experiments, including searches in lepton ($\mu$,$\tau$) decays, pseudoscalar meson (K,$\pi$) decays, vector meson ($\phi$,$J/\psi$,$\Upsilon$) decays, Higgs decays etc.
This talk reviews the charged Lepton Flavor Violation process searches at BESIII experiement. We present the results of searches for the decay of $J/\psi\to e\mu$, using $(225.3\pm2.8)\times10^6$ $J/\psi$ events collected with the BESIII detector at the BEPCII collider. An upper limit on the branching fraction of $\mathcal{B}(J/\psi\to e\mu)<1.6\times10^{-7}$ (90\% C.L.) is obtained. The prospects and challenges with other channels and the future data are also discussed based on projections from MC simulation.
Primary author
Dr
Minggang Zhao
(Nankai University)