TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.17.010
TI  - Search for charged lepton flavor violation in $J/\psi$ decays at BESIII
PY  - 2025/07/23
UR  - https://scipost.org/SciPostPhysProc.17.010
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 17
SP  - 010
A1  - Yu, Xudong
AB  - In the Standard Model, charged lepton flavor violation (CLFV) is heavily suppressed by tiny neutrino mass, while many theoretical models can enhance CLFV effects up to a detectable level. The observation of any CLFV process would be a clear signal of new physics beyond SM. BESIII experiment collected 10 billion $J/\psi$ data and searched for CLFV processes $J/\psi\to e\tau$ and $e\mu$. The upper limits at the 90\% confidence level are determined to be $\mathcal{B}(J/\psi\to e\tau)<7.5× 10^{-8}$ and $\mathcal{B}(J/\psi\to e\mu)<4.5× 10^{-9}$, respectively, which are the most stringent constraints in the heavy quarkonium system.
ER  -

@Article{10.21468/SciPostPhysProc.17.010,
	title={{Search for charged lepton flavor violation in $J/\psi$ decays at BESIII}},
	author={Xudong Yu},
	journal={SciPost Phys. Proc.},
	pages={010},
	year={2025},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.17.010},
	url={https://scipost.org/10.21468/SciPostPhysProc.17.010},
}