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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
A search is presented for the charged-lepton-flavor violating process $Z\rightarrow e\mu$ using 139~fb$^{-1}$ of $pp$ collision data collected with the ATLAS experiment at $\sqrt{s}=13$ TeV. An excess in the $e\mu$ invariant mass spectrum near the $Z$ boson mass would be a striking signature of new...
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Lenguaje: | eng |
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2021
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Acceso en línea: | http://cds.cern.ch/record/2779177 |
_version_ | 1780971784703574016 |
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author | The ATLAS collaboration |
author_facet | The ATLAS collaboration |
author_sort | The ATLAS collaboration |
collection | CERN |
description | A search is presented for the charged-lepton-flavor violating process $Z\rightarrow e\mu$ using 139~fb$^{-1}$ of $pp$ collision data collected with the ATLAS experiment at $\sqrt{s}=13$ TeV. 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 is placed on the branching fraction ${\cal B}(Z\rightarrow e\mu) < 3.04 \times 10^{-7}$ at 95\% confidence level, calculated via a ratio to the average of observed yields of $ee$ and $\mu\mu$ events to significantly reduce systematic uncertainties. |
id | cern-2779177 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2021 |
record_format | invenio |
spelling | cern-27791772022-03-04T14:01:57Zhttp://cds.cern.ch/record/2779177engThe ATLAS collaborationSearch for the Charged-Lepton-Flavor Violating decay $Z\rightarrow e\mu$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detectorParticle Physics - ExperimentA search is presented for the charged-lepton-flavor violating process $Z\rightarrow e\mu$ using 139~fb$^{-1}$ of $pp$ collision data collected with the ATLAS experiment at $\sqrt{s}=13$ TeV. 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 is placed on the branching fraction ${\cal B}(Z\rightarrow e\mu) < 3.04 \times 10^{-7}$ at 95\% confidence level, calculated via a ratio to the average of observed yields of $ee$ and $\mu\mu$ events to significantly reduce systematic uncertainties.ATLAS-CONF-2021-042oai:cds.cern.ch:27791772021-08-25 |
spellingShingle | Particle Physics - Experiment The ATLAS collaboration Search for the Charged-Lepton-Flavor Violating decay $Z\rightarrow e\mu$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector |
title | Search for the Charged-Lepton-Flavor Violating decay $Z\rightarrow e\mu$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector |
title_full | Search for the Charged-Lepton-Flavor Violating decay $Z\rightarrow e\mu$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector |
title_fullStr | Search for the Charged-Lepton-Flavor Violating decay $Z\rightarrow e\mu$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector |
title_full_unstemmed | Search for the Charged-Lepton-Flavor Violating decay $Z\rightarrow e\mu$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector |
title_short | Search for the Charged-Lepton-Flavor Violating decay $Z\rightarrow e\mu$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector |
title_sort | search for the charged-lepton-flavor violating decay $z\rightarrow e\mu$ in $pp$ collisions at $\sqrt{s}=13$ tev with the atlas detector |
topic | Particle Physics - Experiment |
url | http://cds.cern.ch/record/2779177 |
work_keys_str_mv | AT theatlascollaboration searchforthechargedleptonflavorviolatingdecayzrightarrowemuinppcollisionsatsqrts13tevwiththeatlasdetector |