Search for top squarks in the four-body decay mode with single lepton final states 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/10183/270368 |
Resumo: | A search for the pair production of the lightest supersymmetric partner of the top quark, the top squark (˜t1 ), is presented. The search targets the four-body decay of the ˜t1 , which is preferred when the mass difference between the top squark and the lightest supersymmetric particle is smaller than the mass of the W boson. This decay mode consists of a bottom quark, two other fermions, and the lightest neutralino (χ˜ 0 1 ), which is assumed to be the lightest supersymmetric particle. The data correspond to an integrated luminosity of 138 fb−1 of proton-proton collisions at a center-of-mass energy of 13 TeV collected by the CMS experiment at the CERN LHC. Events are selected using the presence of a high-momentum jet, an electron or muon with low transverse momentum, and a significant missing transverse momentum. The signal is selected based on a multivariate approach that is optimized for the difference between m(˜t1 ) and m( ˜χ 0 1 ). The contribution from leading background processes is estimated from data. No significant excess is observed above the expectation from standard model processes. The results of this search exclude top squarks at 95% confidence level for masses up to 480 and 700 GeV for m(˜t1 ) − m( ˜χ 0 1 ) = 10 and 80 GeV, respectively. |
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Tumasyan, ArmenSilveira, Gustavo Gil daBernardes, César AugustoCMS Collaboration2023-12-19T03:24:52Z20231029-8479http://hdl.handle.net/10183/270368001186846A search for the pair production of the lightest supersymmetric partner of the top quark, the top squark (˜t1 ), is presented. The search targets the four-body decay of the ˜t1 , which is preferred when the mass difference between the top squark and the lightest supersymmetric particle is smaller than the mass of the W boson. This decay mode consists of a bottom quark, two other fermions, and the lightest neutralino (χ˜ 0 1 ), which is assumed to be the lightest supersymmetric particle. The data correspond to an integrated luminosity of 138 fb−1 of proton-proton collisions at a center-of-mass energy of 13 TeV collected by the CMS experiment at the CERN LHC. Events are selected using the presence of a high-momentum jet, an electron or muon with low transverse momentum, and a significant missing transverse momentum. The signal is selected based on a multivariate approach that is optimized for the difference between m(˜t1 ) and m( ˜χ 0 1 ). The contribution from leading background processes is estimated from data. No significant excess is observed above the expectation from standard model processes. The results of this search exclude top squarks at 95% confidence level for masses up to 480 and 700 GeV for m(˜t1 ) − m( ˜χ 0 1 ) = 10 and 80 GeV, respectively.application/pdfengThe journal of high energy physics. Trieste. No. 6 (June 2023), 060, 50 p.Aceleradores de partículasSupersimetriasColisões proton-protonHadron-Hadron scatteringSupersymmetryTop squarkSearch for top squarks in the four-body decay mode with single lepton final states 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:UFRGSTEXT001186846.pdf.txt001186846.pdf.txtExtracted Texttext/plain134235http://www.lume.ufrgs.br/bitstream/10183/270368/2/001186846.pdf.txtd39cde5bb04088047f1ca47547deee47MD52ORIGINAL001186846.pdfTexto completo (inglês)application/pdf1657436http://www.lume.ufrgs.br/bitstream/10183/270368/1/001186846.pdfc03a5805cc3f14b497b79f64c8b66e96MD5110183/2703682023-12-20 04:22:26.845731oai:www.lume.ufrgs.br:10183/270368Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-12-20T06:22:26Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at √s = 13 TeV |
title |
Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at √s = 13 TeV |
spellingShingle |
Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at √s = 13 TeV Tumasyan, Armen Aceleradores de partículas Supersimetrias Colisões proton-proton Hadron-Hadron scattering Supersymmetry Top squark |
title_short |
Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at √s = 13 TeV |
title_full |
Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at √s = 13 TeV |
title_fullStr |
Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at √s = 13 TeV |
title_full_unstemmed |
Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at √s = 13 TeV |
title_sort |
Search for top squarks in the four-body decay mode with single lepton final states 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 Top squark |
dc.subject.eng.fl_str_mv |
Hadron-Hadron scattering Supersymmetry Top squark |
description |
A search for the pair production of the lightest supersymmetric partner of the top quark, the top squark (˜t1 ), is presented. The search targets the four-body decay of the ˜t1 , which is preferred when the mass difference between the top squark and the lightest supersymmetric particle is smaller than the mass of the W boson. This decay mode consists of a bottom quark, two other fermions, and the lightest neutralino (χ˜ 0 1 ), which is assumed to be the lightest supersymmetric particle. The data correspond to an integrated luminosity of 138 fb−1 of proton-proton collisions at a center-of-mass energy of 13 TeV collected by the CMS experiment at the CERN LHC. Events are selected using the presence of a high-momentum jet, an electron or muon with low transverse momentum, and a significant missing transverse momentum. The signal is selected based on a multivariate approach that is optimized for the difference between m(˜t1 ) and m( ˜χ 0 1 ). The contribution from leading background processes is estimated from data. No significant excess is observed above the expectation from standard model processes. The results of this search exclude top squarks at 95% confidence level for masses up to 480 and 700 GeV for m(˜t1 ) − m( ˜χ 0 1 ) = 10 and 80 GeV, respectively. |
publishDate |
2023 |
dc.date.accessioned.fl_str_mv |
2023-12-19T03:24:52Z |
dc.date.issued.fl_str_mv |
2023 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
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publishedVersion |
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http://hdl.handle.net/10183/270368 |
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1029-8479 |
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001186846 |
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http://hdl.handle.net/10183/270368 |
dc.language.iso.fl_str_mv |
eng |
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eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The journal of high energy physics. Trieste. No. 6 (June 2023), 060, 50 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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