TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.1.048
TI  - Search for lepton-flavour-violating decays of the $Z$ boson into a $\tau$-lepton and a light lepton with the ATLAS detector
PY  - 2019/02/22
UR  - https://scipost.org/SciPostPhysProc.1.048
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 1
SP  - 048
A1  - Chan, Wing Sheung
AB  - Lepton flavour violation in the charged lepton sector is an unambiguous signal of physics beyond the Standard Model. Searches for lepton flavour violation in decays of the $Z$ boson with the ATLAS detector is reported, focusing on decays into an electron or muon and a hadronically decaying $\tau$-lepton, using $pp$ collisions data with a centre-of-mass energy of 13 TeV. Upper limits on the branching ratios of lepton-flavor-violating decays are set at the 95\% confidence level: $\mathcal{B}(Z\to e\tau) < 5.8\times10^{-5}$ and $\mathcal{B}(Z\to \mu\tau) < 2.4\times10^{-5}$. When combined with a previous ATLAS result based on $pp$ collisions data with a centre-of-mass energy of 8 TeV, an upper limit of $\mathcal{B}(Z\to \mu\tau) < 1.3\times10^{-5}$ is obtained.
ER  -

@Article{10.21468/SciPostPhysProc.1.048,
	title={{Search for lepton-flavour-violating decays of the $Z$ boson into a $\tau$-lepton and a light lepton with the ATLAS detector}},
	author={Wing Sheung Chan on behalf of the ATLAS collaboration},
	journal={SciPost Phys. Proc.},
	pages={048},
	year={2019},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.1.048},
	url={https://scipost.org/10.21468/SciPostPhysProc.1.048},
}