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Search for $H^{\pm} \rightarrow W^{\pm}A \rightarrow W^{\pm}\mu\mu$ in $pp \rightarrow t\overline{t}$ events using an $e\mu\mu$ signature with the ATLAS detector at $\sqrt{s}=13$ TeV
This note presents a search for a charged Higgs boson ($H^{\pm}$) decaying to a pseudoscalar particle ($A$) and a $W$ boson in top-quark pair events. It selects events with one electron and two muons in the final state and three or more jets, at least one of which is $b$-tagged. The mass range for t...
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Lenguaje: | eng |
Publicado: |
2021
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Acceso en línea: | http://cds.cern.ch/record/2780092 |
_version_ | 1780971849146957824 |
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author | The ATLAS collaboration |
author_facet | The ATLAS collaboration |
author_sort | The ATLAS collaboration |
collection | CERN |
description | This note presents a search for a charged Higgs boson ($H^{\pm}$) decaying to a pseudoscalar particle ($A$) and a $W$ boson in top-quark pair events. It selects events with one electron and two muons in the final state and three or more jets, at least one of which is $b$-tagged. The mass range for the $H^{\pm}$ is between 100 GeV and 160 GeV, and that of the $A$ is between 15 GeV and 75 GeV. The study uses 139 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV collected by the ATLAS detector during Run 2 of the LHC to search for an excess in the $\mu^+\mu^-$ invariant mass spectrum. No significant excess above Standard Model predictions is observed. Upper limits are set at the 95% confidence level on the product of the branching ratios $t\rightarrow bH^\pm$, $H^\pm\rightarrow W^\pm A$ and $A \rightarrow \mu^+\mu^-$. The observed (expected) limits vary from $0.9$ $(1.6)$ $\times 10^{-6}$ to $6.9$ $(9.9)$ $\times 10^{-6}$, depending on the masses of the $H^{\pm}$ and $A$. The results of this search are used to set the first lower limits on $\tan\beta$ in a 2HDM type-I model in the $m_{H^{\pm}}$, $m_A$ parameter space. |
id | cern-2780092 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2021 |
record_format | invenio |
spelling | cern-27800922021-12-21T10:11:57Zhttp://cds.cern.ch/record/2780092engThe ATLAS collaborationSearch for $H^{\pm} \rightarrow W^{\pm}A \rightarrow W^{\pm}\mu\mu$ in $pp \rightarrow t\overline{t}$ events using an $e\mu\mu$ signature with the ATLAS detector at $\sqrt{s}=13$ TeVParticle Physics - ExperimentThis note presents a search for a charged Higgs boson ($H^{\pm}$) decaying to a pseudoscalar particle ($A$) and a $W$ boson in top-quark pair events. It selects events with one electron and two muons in the final state and three or more jets, at least one of which is $b$-tagged. The mass range for the $H^{\pm}$ is between 100 GeV and 160 GeV, and that of the $A$ is between 15 GeV and 75 GeV. The study uses 139 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV collected by the ATLAS detector during Run 2 of the LHC to search for an excess in the $\mu^+\mu^-$ invariant mass spectrum. No significant excess above Standard Model predictions is observed. Upper limits are set at the 95% confidence level on the product of the branching ratios $t\rightarrow bH^\pm$, $H^\pm\rightarrow W^\pm A$ and $A \rightarrow \mu^+\mu^-$. The observed (expected) limits vary from $0.9$ $(1.6)$ $\times 10^{-6}$ to $6.9$ $(9.9)$ $\times 10^{-6}$, depending on the masses of the $H^{\pm}$ and $A$. The results of this search are used to set the first lower limits on $\tan\beta$ in a 2HDM type-I model in the $m_{H^{\pm}}$, $m_A$ parameter space.ATLAS-CONF-2021-047oai:cds.cern.ch:27800922021-09-04 |
spellingShingle | Particle Physics - Experiment The ATLAS collaboration Search for $H^{\pm} \rightarrow W^{\pm}A \rightarrow W^{\pm}\mu\mu$ in $pp \rightarrow t\overline{t}$ events using an $e\mu\mu$ signature with the ATLAS detector at $\sqrt{s}=13$ TeV |
title | Search for $H^{\pm} \rightarrow W^{\pm}A \rightarrow W^{\pm}\mu\mu$ in $pp \rightarrow t\overline{t}$ events using an $e\mu\mu$ signature with the ATLAS detector at $\sqrt{s}=13$ TeV |
title_full | Search for $H^{\pm} \rightarrow W^{\pm}A \rightarrow W^{\pm}\mu\mu$ in $pp \rightarrow t\overline{t}$ events using an $e\mu\mu$ signature with the ATLAS detector at $\sqrt{s}=13$ TeV |
title_fullStr | Search for $H^{\pm} \rightarrow W^{\pm}A \rightarrow W^{\pm}\mu\mu$ in $pp \rightarrow t\overline{t}$ events using an $e\mu\mu$ signature with the ATLAS detector at $\sqrt{s}=13$ TeV |
title_full_unstemmed | Search for $H^{\pm} \rightarrow W^{\pm}A \rightarrow W^{\pm}\mu\mu$ in $pp \rightarrow t\overline{t}$ events using an $e\mu\mu$ signature with the ATLAS detector at $\sqrt{s}=13$ TeV |
title_short | Search for $H^{\pm} \rightarrow W^{\pm}A \rightarrow W^{\pm}\mu\mu$ in $pp \rightarrow t\overline{t}$ events using an $e\mu\mu$ signature with the ATLAS detector at $\sqrt{s}=13$ TeV |
title_sort | search for $h^{\pm} \rightarrow w^{\pm}a \rightarrow w^{\pm}\mu\mu$ in $pp \rightarrow t\overline{t}$ events using an $e\mu\mu$ signature with the atlas detector at $\sqrt{s}=13$ tev |
topic | Particle Physics - Experiment |
url | http://cds.cern.ch/record/2780092 |
work_keys_str_mv | AT theatlascollaboration searchforhpmrightarrowwpmarightarrowwpmmumuinpprightarrowtoverlineteventsusinganemumusignaturewiththeatlasdetectoratsqrts13tev |