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Search for diphoton resonances in the 66 to 110 GeV mass range using 140 fb$^{-1}$ of 13 TeV $pp$ collisions collected with the ATLAS detector
Many extensions to the Higgs sector of the Standard Model motivate additional spin-0 bosons. This search focuses on light, spin-0 bosons decaying to two photons in the 66 to 110 GeV mass range, using 140 fb$^{-1}$ of $pp$ collisions produced by the Large Hadron Collider and collected by the ATLAS de...
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Lenguaje: | eng |
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2023
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Acceso en línea: | http://cds.cern.ch/record/2862024 |
_version_ | 1780977853776527360 |
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author | The ATLAS collaboration |
author_facet | The ATLAS collaboration |
author_sort | The ATLAS collaboration |
collection | CERN |
description | Many extensions to the Higgs sector of the Standard Model motivate additional spin-0 bosons. This search focuses on light, spin-0 bosons decaying to two photons in the 66 to 110 GeV mass range, using 140 fb$^{-1}$ of $pp$ collisions produced by the Large Hadron Collider and collected by the ATLAS detector. Multi-variate analysis techniques are used to both mitigate background processes and classify events, improving the sensitivity to physics beyond the Standard Model. Additionally, a Gaussian Process regression is used to maintain a non-dominant uncertainty on the background model. Both a model-independent search for a generic spin-0 particle and a model-dependent search for an additional low-mass Higgs boson are performed. No significant excess is observed, and an upper limit at the 95% CL is set on total (fiducial) cross-section times branching ratio from 8 to 53 fb (19 to 102 fb) for the model-independent (model-dependent) result. |
id | cern-2862024 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2023 |
record_format | invenio |
spelling | cern-28620242023-06-15T18:48:17Zhttp://cds.cern.ch/record/2862024engThe ATLAS collaborationSearch for diphoton resonances in the 66 to 110 GeV mass range using 140 fb$^{-1}$ of 13 TeV $pp$ collisions collected with the ATLAS detectorParticle Physics - ExperimentMany extensions to the Higgs sector of the Standard Model motivate additional spin-0 bosons. This search focuses on light, spin-0 bosons decaying to two photons in the 66 to 110 GeV mass range, using 140 fb$^{-1}$ of $pp$ collisions produced by the Large Hadron Collider and collected by the ATLAS detector. Multi-variate analysis techniques are used to both mitigate background processes and classify events, improving the sensitivity to physics beyond the Standard Model. Additionally, a Gaussian Process regression is used to maintain a non-dominant uncertainty on the background model. Both a model-independent search for a generic spin-0 particle and a model-dependent search for an additional low-mass Higgs boson are performed. No significant excess is observed, and an upper limit at the 95% CL is set on total (fiducial) cross-section times branching ratio from 8 to 53 fb (19 to 102 fb) for the model-independent (model-dependent) result.ATLAS-CONF-2023-035oai:cds.cern.ch:28620242023-06-15 |
spellingShingle | Particle Physics - Experiment The ATLAS collaboration Search for diphoton resonances in the 66 to 110 GeV mass range using 140 fb$^{-1}$ of 13 TeV $pp$ collisions collected with the ATLAS detector |
title | Search for diphoton resonances in the 66 to 110 GeV mass range using 140 fb$^{-1}$ of 13 TeV $pp$ collisions collected with the ATLAS detector |
title_full | Search for diphoton resonances in the 66 to 110 GeV mass range using 140 fb$^{-1}$ of 13 TeV $pp$ collisions collected with the ATLAS detector |
title_fullStr | Search for diphoton resonances in the 66 to 110 GeV mass range using 140 fb$^{-1}$ of 13 TeV $pp$ collisions collected with the ATLAS detector |
title_full_unstemmed | Search for diphoton resonances in the 66 to 110 GeV mass range using 140 fb$^{-1}$ of 13 TeV $pp$ collisions collected with the ATLAS detector |
title_short | Search for diphoton resonances in the 66 to 110 GeV mass range using 140 fb$^{-1}$ of 13 TeV $pp$ collisions collected with the ATLAS detector |
title_sort | search for diphoton resonances in the 66 to 110 gev mass range using 140 fb$^{-1}$ of 13 tev $pp$ collisions collected with the atlas detector |
topic | Particle Physics - Experiment |
url | http://cds.cern.ch/record/2862024 |
work_keys_str_mv | AT theatlascollaboration searchfordiphotonresonancesinthe66to110gevmassrangeusing140fb1of13tevppcollisionscollectedwiththeatlasdetector |