Search for supersymmetry in final states with a single electron or muon using angular correlations and heavy-object identification in proton-proton collisions at √s = 13 TeV
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/268535 |
Resumo: | A search for supersymmetry is presented in events with a single charged lepton, electron or muon, and multiple hadronic jets. The data correspond to an integrated lumi nosity of 138 fb−1 of proton-proton collisions at a center-of-mass energy of 13 TeV, recorded by the CMS experiment at the CERN LHC. The search targets gluino pair production, where the gluinos decay into final states with the lightest supersymmetric particle (LSP) and either a top quark-antiquark (t¯t) pair, or a light-flavor quark-antiquark (q¯q) pair and a virtual or on-shell W boson. The main backgrounds, t¯t pair and W+jets production, are suppressed by requirements on the azimuthal angle between the momenta of the lep ton and of its reconstructed parent W boson candidate, and by top quark and W boson identification based on a machine-learning technique. The number of observed events is consistent with the expectations from standard model processes. Limits are evaluated on supersymmetric particle masses in the context of two simplified models of gluino pair pro duction. Exclusions for gluino masses reach up to 2120 (2050) GeV at 95% confidence level for a model with gluino decay to a t¯t pair (a q¯q pair and a W boson) and the LSP. For the same models, limits on the mass of the LSP reach up to 1250 (1070) GeV. |
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Tumasyan, ArmenSilveira, Gustavo Gil daBernardes, César AugustoCMS Collaboration2023-12-16T03:26:54Z20231029-8479http://hdl.handle.net/10183/268535001193128A search for supersymmetry is presented in events with a single charged lepton, electron or muon, and multiple hadronic jets. The data correspond to an integrated lumi nosity of 138 fb−1 of proton-proton collisions at a center-of-mass energy of 13 TeV, recorded by the CMS experiment at the CERN LHC. The search targets gluino pair production, where the gluinos decay into final states with the lightest supersymmetric particle (LSP) and either a top quark-antiquark (t¯t) pair, or a light-flavor quark-antiquark (q¯q) pair and a virtual or on-shell W boson. The main backgrounds, t¯t pair and W+jets production, are suppressed by requirements on the azimuthal angle between the momenta of the lep ton and of its reconstructed parent W boson candidate, and by top quark and W boson identification based on a machine-learning technique. The number of observed events is consistent with the expectations from standard model processes. Limits are evaluated on supersymmetric particle masses in the context of two simplified models of gluino pair pro duction. Exclusions for gluino masses reach up to 2120 (2050) GeV at 95% confidence level for a model with gluino decay to a t¯t pair (a q¯q pair and a W boson) and the LSP. For the same models, limits on the mass of the LSP reach up to 1250 (1070) GeV.application/pdfengThe journal of high energy physics. Trieste. No. 9 (Sept. 2023), 149, 58 p.Aceleradores de partículasSupersimetriasColisões proton-protonHadron-Hadron scatteringSupersymmetrySearch for supersymmetry in final states with a single electron or muon using angular correlations and heavy-object identification in proton-proton collisions at √s = 13 TeVEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001193128.pdf.txt001193128.pdf.txtExtracted Texttext/plain156478http://www.lume.ufrgs.br/bitstream/10183/268535/2/001193128.pdf.txtd28d380889b0f0caec9af4e68f053c33MD52ORIGINAL001193128.pdfTexto completo (inglês)application/pdf1738016http://www.lume.ufrgs.br/bitstream/10183/268535/1/001193128.pdfed34425e73a73731c9fd931ee9ccedbbMD5110183/2685352023-12-17 04:23:05.583272oai:www.lume.ufrgs.br:10183/268535Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-12-17T06:23:05Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Search for supersymmetry in final states with a single electron or muon using angular correlations and heavy-object identification in proton-proton collisions at √s = 13 TeV |
title |
Search for supersymmetry in final states with a single electron or muon using angular correlations and heavy-object identification in proton-proton collisions at √s = 13 TeV |
spellingShingle |
Search for supersymmetry in final states with a single electron or muon using angular correlations and heavy-object identification in proton-proton collisions at √s = 13 TeV Tumasyan, Armen Aceleradores de partículas Supersimetrias Colisões proton-proton Hadron-Hadron scattering Supersymmetry |
title_short |
Search for supersymmetry in final states with a single electron or muon using angular correlations and heavy-object identification in proton-proton collisions at √s = 13 TeV |
title_full |
Search for supersymmetry in final states with a single electron or muon using angular correlations and heavy-object identification in proton-proton collisions at √s = 13 TeV |
title_fullStr |
Search for supersymmetry in final states with a single electron or muon using angular correlations and heavy-object identification in proton-proton collisions at √s = 13 TeV |
title_full_unstemmed |
Search for supersymmetry in final states with a single electron or muon using angular correlations and heavy-object identification in proton-proton collisions at √s = 13 TeV |
title_sort |
Search for supersymmetry in final states with a single electron or muon using angular correlations and heavy-object identification in proton-proton collisions at √s = 13 TeV |
author |
Tumasyan, Armen |
author_facet |
Tumasyan, Armen Silveira, Gustavo Gil da Bernardes, César Augusto CMS Collaboration |
author_role |
author |
author2 |
Silveira, Gustavo Gil da Bernardes, César Augusto CMS Collaboration |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Tumasyan, Armen Silveira, Gustavo Gil da Bernardes, César Augusto CMS Collaboration |
dc.subject.por.fl_str_mv |
Aceleradores de partículas Supersimetrias Colisões proton-proton |
topic |
Aceleradores de partículas Supersimetrias Colisões proton-proton Hadron-Hadron scattering Supersymmetry |
dc.subject.eng.fl_str_mv |
Hadron-Hadron scattering Supersymmetry |
description |
A search for supersymmetry is presented in events with a single charged lepton, electron or muon, and multiple hadronic jets. The data correspond to an integrated lumi nosity of 138 fb−1 of proton-proton collisions at a center-of-mass energy of 13 TeV, recorded by the CMS experiment at the CERN LHC. The search targets gluino pair production, where the gluinos decay into final states with the lightest supersymmetric particle (LSP) and either a top quark-antiquark (t¯t) pair, or a light-flavor quark-antiquark (q¯q) pair and a virtual or on-shell W boson. The main backgrounds, t¯t pair and W+jets production, are suppressed by requirements on the azimuthal angle between the momenta of the lep ton and of its reconstructed parent W boson candidate, and by top quark and W boson identification based on a machine-learning technique. The number of observed events is consistent with the expectations from standard model processes. Limits are evaluated on supersymmetric particle masses in the context of two simplified models of gluino pair pro duction. Exclusions for gluino masses reach up to 2120 (2050) GeV at 95% confidence level for a model with gluino decay to a t¯t pair (a q¯q pair and a W boson) and the LSP. For the same models, limits on the mass of the LSP reach up to 1250 (1070) GeV. |
publishDate |
2023 |
dc.date.accessioned.fl_str_mv |
2023-12-16T03:26:54Z |
dc.date.issued.fl_str_mv |
2023 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
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info:eu-repo/semantics/publishedVersion |
format |
article |
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publishedVersion |
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http://hdl.handle.net/10183/268535 |
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001193128 |
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http://hdl.handle.net/10183/268535 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The journal of high energy physics. Trieste. No. 9 (Sept. 2023), 149, 58 p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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