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Search for R-parity violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment

R-parity-violating (RPV) SUSY models are well motivated theories, with fewer experimental constraints than many R-parity-conserving models, and allow for more natural supersymmetric mass spectra. This talk presents the latest result for a search for RPV SUSY in final states with at least one lepton...

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Detalles Bibliográficos
Autores principales: ATLAS Collaboration, Errenst, Martin
Lenguaje:eng
Publicado: 2021
Materias:
Acceso en línea:http://cds.cern.ch/record/2779407
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author ATLAS Collaboration
Errenst, Martin
author_facet ATLAS Collaboration
Errenst, Martin
author_sort ATLAS Collaboration
collection CERN
description R-parity-violating (RPV) SUSY models are well motivated theories, with fewer experimental constraints than many R-parity-conserving models, and allow for more natural supersymmetric mass spectra. This talk presents the latest result for a search for RPV SUSY in final states with at least one lepton and high number of jets, several of which may be b-jets. The analysis follows a general approach to be sensitive to a large variety of models for strong production of SUSY particles. Additionally, it introduces the use of novel machine learning techniques to reach sensitivity, for the first time at the LHC, for electroweak production of SUSY particles (including Higgsinos) with subsequent RPV prompt decays to quarks. These machine learning techniques are based on the distance correlation training and they play a key role also in the data-driven estimation of the backgrounds. The analysis sets impressive limits reaching as high as 2.4 TeV in gluino mass, 1.35 TeV in top-squark mass, and 320 (365) GeV in higgsino (wino) mass.
id cern-2779407
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
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spelling cern-27794072021-08-27T20:56:24Zhttp://cds.cern.ch/record/2779407engATLAS CollaborationErrenst, MartinSearch for R-parity violating supersymmetry in a final state containing leptons and many jets with the ATLAS experimentParticle Physics - ExperimentR-parity-violating (RPV) SUSY models are well motivated theories, with fewer experimental constraints than many R-parity-conserving models, and allow for more natural supersymmetric mass spectra. This talk presents the latest result for a search for RPV SUSY in final states with at least one lepton and high number of jets, several of which may be b-jets. The analysis follows a general approach to be sensitive to a large variety of models for strong production of SUSY particles. Additionally, it introduces the use of novel machine learning techniques to reach sensitivity, for the first time at the LHC, for electroweak production of SUSY particles (including Higgsinos) with subsequent RPV prompt decays to quarks. These machine learning techniques are based on the distance correlation training and they play a key role also in the data-driven estimation of the backgrounds. The analysis sets impressive limits reaching as high as 2.4 TeV in gluino mass, 1.35 TeV in top-squark mass, and 320 (365) GeV in higgsino (wino) mass.ATL-PHYS-SLIDE-2021-436oai:cds.cern.ch:27794072021-08-27
spellingShingle Particle Physics - Experiment
ATLAS Collaboration
Errenst, Martin
Search for R-parity violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment
title Search for R-parity violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment
title_full Search for R-parity violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment
title_fullStr Search for R-parity violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment
title_full_unstemmed Search for R-parity violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment
title_short Search for R-parity violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment
title_sort search for r-parity violating supersymmetry in a final state containing leptons and many jets with the atlas experiment
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2779407
work_keys_str_mv AT atlascollaboration searchforrparityviolatingsupersymmetryinafinalstatecontainingleptonsandmanyjetswiththeatlasexperiment
AT errenstmartin searchforrparityviolatingsupersymmetryinafinalstatecontainingleptonsandmanyjetswiththeatlasexperiment