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Search for direct production of electroweakinos in final states with missing transverse energy and a Higgs boson decaying into photons in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
A search for a chargino-neutralino pair decaying via the 125 GeV Higgs boson into photons is presented. This study is based on the full Run 2 data collected between 2015 and 2018 with the ATLAS detector at the LHC, corresponding to an integrated luminosity of $139~\mathrm{fb}^{-1}$ of pp collisions...
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Lenguaje: | eng |
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2019
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Acceso en línea: | http://cds.cern.ch/record/2676596 |
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author | The ATLAS collaboration |
author_facet | The ATLAS collaboration |
author_sort | The ATLAS collaboration |
collection | CERN |
description | A search for a chargino-neutralino pair decaying via the 125 GeV Higgs boson into photons is presented. This study is based on the full Run 2 data collected between 2015 and 2018 with the ATLAS detector at the LHC, corresponding to an integrated luminosity of $139~\mathrm{fb}^{-1}$ of pp collisions at a centre-of-mass energy of 13 TeV. No significant excess over the expected background is observed. Upper limits at 95% confidence level for a massless $\tilde{\chi}^{0}_{1}$ are set on several electroweakino production cross sections and the visible cross section for beyond the Standard Model physics processes. In the context of simplified supersymmetric models, 95% confidence-level limits of up to 315 GeV in $m(\tilde{\chi}^{\pm}_{1}/\tilde{\chi}^{0}_{2})$, where $m(\tilde{\chi}^{0}_{1})$ is 0.5 GeV, are set. Limits at 95% confidence level are also set on the $\tilde{\chi}^{\pm}_{1}\tilde{\chi}^{0}_{2}$ cross section in the mass plane of $m(\tilde{\chi}^{\pm}_{1}/\tilde{\chi}^{0}_{2})$ and $m(\tilde{\chi}^{0}_{1})$. |
id | cern-2676596 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2019 |
record_format | invenio |
spelling | cern-26765962021-04-18T19:39:32Zhttp://cds.cern.ch/record/2676596engThe ATLAS collaborationSearch for direct production of electroweakinos in final states with missing transverse energy and a Higgs boson decaying into photons in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detectorParticle Physics - ExperimentA search for a chargino-neutralino pair decaying via the 125 GeV Higgs boson into photons is presented. This study is based on the full Run 2 data collected between 2015 and 2018 with the ATLAS detector at the LHC, corresponding to an integrated luminosity of $139~\mathrm{fb}^{-1}$ of pp collisions at a centre-of-mass energy of 13 TeV. No significant excess over the expected background is observed. Upper limits at 95% confidence level for a massless $\tilde{\chi}^{0}_{1}$ are set on several electroweakino production cross sections and the visible cross section for beyond the Standard Model physics processes. In the context of simplified supersymmetric models, 95% confidence-level limits of up to 315 GeV in $m(\tilde{\chi}^{\pm}_{1}/\tilde{\chi}^{0}_{2})$, where $m(\tilde{\chi}^{0}_{1})$ is 0.5 GeV, are set. Limits at 95% confidence level are also set on the $\tilde{\chi}^{\pm}_{1}\tilde{\chi}^{0}_{2}$ cross section in the mass plane of $m(\tilde{\chi}^{\pm}_{1}/\tilde{\chi}^{0}_{2})$ and $m(\tilde{\chi}^{0}_{1})$.ATLAS-CONF-2019-019oai:cds.cern.ch:26765962019-05-28 |
spellingShingle | Particle Physics - Experiment The ATLAS collaboration Search for direct production of electroweakinos in final states with missing transverse energy and a Higgs boson decaying into photons in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector |
title | Search for direct production of electroweakinos in final states with missing transverse energy and a Higgs boson decaying into photons in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector |
title_full | Search for direct production of electroweakinos in final states with missing transverse energy and a Higgs boson decaying into photons in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector |
title_fullStr | Search for direct production of electroweakinos in final states with missing transverse energy and a Higgs boson decaying into photons in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector |
title_full_unstemmed | Search for direct production of electroweakinos in final states with missing transverse energy and a Higgs boson decaying into photons in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector |
title_short | Search for direct production of electroweakinos in final states with missing transverse energy and a Higgs boson decaying into photons in pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector |
title_sort | search for direct production of electroweakinos in final states with missing transverse energy and a higgs boson decaying into photons in pp collisions at $\sqrt{s}=13$ tev with the atlas detector |
topic | Particle Physics - Experiment |
url | http://cds.cern.ch/record/2676596 |
work_keys_str_mv | AT theatlascollaboration searchfordirectproductionofelectroweakinosinfinalstateswithmissingtransverseenergyandahiggsbosondecayingintophotonsinppcollisionsatsqrts13tevwiththeatlasdetector |