September 27, 2021 to October 1, 2021
Indiana University
America/Indiana/Indianapolis timezone

Search for charged lepton flavor violation at BESIII

Sep 28, 2021, 8:00 AM
Virtual (Indiana University)


Indiana University


Dayong Wang (Peking University)


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. Besides the result for the decay of $J/\psi\to e\mu$ published earlier, the decay of Jpsi-> e tau, with
tau->pi- pi0 nv_tau is searched with the 10 Billion $J/\psi$ events
collected by BESIII and the result improves the previously published limit by two orders of magnitude. Future perspectives will also be discussed.

What is your topic? Lepton universality and flavour violation

Primary author

Dayong Wang (Peking University)

Presentation materials