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@ARTICLE{Hayrapetyan:637079,
author = {Hayrapetyan, Aram and others},
collaboration = {{CMS Collaboration}},
title = {{S}earch for charged lepton flavor violating {Z} and {Z}'
boson decays in proton-proton collisions at $\sqrt{s}$ = 13
{T}e{V}},
reportid = {PUBDB-2025-03768, arXiv:2508.07512. CMS-SMP-23-003.
CERN-EP-2025-130},
year = {2025},
note = {Submitted to Physical Review D. All figures and tables can
be found at
http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-23-003
(CMS Public Pages)},
abstract = {A search for flavor violating decays of the Z boson to
charged leptons is performed using data from proton-proton
collisions at $\sqrt{s}$ = 13 TeV collected with the CMS
detector at the LHC, corresponding to an integrated
luminosity of 138 fb$^{-1}$. Each of the decays Z $\to$
e$μ$, Z $\to$ e$τ$, and Z $\to$$μτ$ is considered. The
data are consistent with the backgrounds expected from
standard model processes. For the Z $\to$ e$μ$ channel the
observed (expected) 95\% confidence level upper limit on the
branching fraction is 1.9 (2.0) $\times$ 10$^{-7}$, which is
the most stringent direct limit to date on this process; the
corresponding limits for the Z $\to$ e$τ$ and Z $\to$
$μτ$ channels are 13.8 (11.4) $\times$ 10$^{-6}$ and 12.0
(5.3) $\times$ 10$^{-6}$, respectively. Additionally, the
e$μ$ final state is used to search for lepton flavor
violating decays of Z' resonances in the mass range from 110
to 500 GeV. No significant excess is observed above the
predicted background levels.},
cin = {CMS},
cid = {I:(DE-H253)CMS-20120731},
pnm = {611 - Fundamental Particles and Forces (POF4-611) /
HIDSS-0002 - DASHH: Data Science in Hamburg - Helmholtz
Graduate School for the Structure of Matter
$(2019_IVF-HIDSS-0002)$ / DFG project G:(GEPRIS)390833306 -
EXC 2121: Quantum Universe (390833306)},
pid = {G:(DE-HGF)POF4-611 / $G:(DE-HGF)2019_IVF-HIDSS-0002$ /
G:(GEPRIS)390833306},
experiment = {EXP:(DE-H253)LHC-Exp-CMS-20150101},
typ = {PUB:(DE-HGF)25},
eprint = {2508.07512},
howpublished = {arXiv:2508.07512},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2508.07512;\%\%$},
doi = {10.3204/PUBDB-2025-03768},
url = {https://bib-pubdb1.desy.de/record/637079},
}