Search for the charged-lepton-flavor-violating decay $Z\rightarrow e\mu$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector - INSPIRE

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Search for the charged-lepton-flavor-violating decay $Z\rightarrow e\mu$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

ATLAS

Collaboration

Apr 22, 2022

22 pages

Published in:

Phys.Rev.D 108 (2023) 032015

Published: Aug 25, 2023

e-Print:

2204.10783 [hep-ex]

DOI:

10.1103/PhysRevD.108.032015 (publication)

PDG:

{{\mathit Z}}

\rightarrow

{{\mathit e}^{\pm}}{{\mathit \mu}^{\mp}}

Report number:

CERN-EP-2022-007

Experiments:

CERN-LHC-ATLAS

View in:

reference search31 citations

Citations per year

Abstract: (arXiv)

A search for the charged-lepton-flavor-violating process

Z\rightarrow e\mu

is presented, using 139 fb

^{-1}

of

\sqrt{s}=13

TeV

pp

collision data collected by the ATLAS experiment at the LHC. An excess in the

e\mu

invariant mass spectrum near the

Z

boson mass would be a striking signature of new physics. No excess is observed, and an upper limit

B(Z\rightarrow e\mu) < 2.62 \times 10^{-7}

is placed on the branching fraction at 95% confidence level, which is the most stringent limit to date.

Note:

All figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2018-35/

p p: scattering
p p: colliding beams
Z0: mass
Z0: leptonic decay
Z0: rare decay
new physics: signature
lepton: flavor: violation
ATLAS
mass spectrum: (electron muon)
CERN LHC Coll

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