Search for nonresonant Higgs boson pair production in the four leptons plus twob jets final state in proton-proton collisions at √s = 13 TeV

Detalhes bibliográficos
Autor(a) principal: Tumasyan, Armen
Data de Publicação: 2023
Outros Autores: Silveira, Gustavo Gil da, Bernardes, César Augusto, CMS Collaboration
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/270387
Resumo: The first search for nonresonant production of Higgs boson pairs (HH) with one H decaying into four leptons and the other into a pair of b quarks is presented, using proton-proton collisions recorded at a center-of-mass energy of √ s = 13 TeV by the CMS experiment. The analyzed data correspond to an integrated luminosity of 138 fb−1 . A 95% confidence level upper limit of 32.4 is set on the signal strength modifier µ, defined as the ratio of the observed HH production rate in the HH → ZZ∗ bb → 4`bb decay channel to the standard model (SM) expectation. Possible modifications of the H trilinear coupling λHHH with respect to the SM value are investigated. The coupling modifier κλ, defined as λHHH divided by its SM prediction, is constrained to be within the observed (expected) range −8.8 (−9.8) < κλ < 13.4 (15.0) at 95% confidence level.
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spelling Tumasyan, ArmenSilveira, Gustavo Gil daBernardes, César AugustoCMS Collaboration2023-12-19T03:25:24Z20231029-8479http://hdl.handle.net/10183/270387001186844The first search for nonresonant production of Higgs boson pairs (HH) with one H decaying into four leptons and the other into a pair of b quarks is presented, using proton-proton collisions recorded at a center-of-mass energy of √ s = 13 TeV by the CMS experiment. The analyzed data correspond to an integrated luminosity of 138 fb−1 . A 95% confidence level upper limit of 32.4 is set on the signal strength modifier µ, defined as the ratio of the observed HH production rate in the HH → ZZ∗ bb → 4`bb decay channel to the standard model (SM) expectation. Possible modifications of the H trilinear coupling λHHH with respect to the SM value are investigated. The coupling modifier κλ, defined as λHHH divided by its SM prediction, is constrained to be within the observed (expected) range −8.8 (−9.8) < κλ < 13.4 (15.0) at 95% confidence level.application/pdfengThe journal of high energy physics. Trieste. No. 6 (June 2023), 130, 40 p.Aceleradores de partículasBosons de higgsColisões proton-protonHadron-Hadron scatteringHiggs PhysicsSearch for nonresonant Higgs boson pair production in the four leptons plus twob jets final state 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:UFRGSTEXT001186844.pdf.txt001186844.pdf.txtExtracted Texttext/plain101233http://www.lume.ufrgs.br/bitstream/10183/270387/2/001186844.pdf.txtd73731d11b432a921c2af4022a73f0d5MD52ORIGINAL001186844.pdfTexto completo (inglês)application/pdf1084077http://www.lume.ufrgs.br/bitstream/10183/270387/1/001186844.pdf9b1fabc4590d667f616f36018dc221cfMD5110183/2703872023-12-20 04:23:21.501959oai:www.lume.ufrgs.br:10183/270387Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-12-20T06:23:21Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Search for nonresonant Higgs boson pair production in the four leptons plus twob jets final state in proton-proton collisions at √s = 13 TeV
title Search for nonresonant Higgs boson pair production in the four leptons plus twob jets final state in proton-proton collisions at √s = 13 TeV
spellingShingle Search for nonresonant Higgs boson pair production in the four leptons plus twob jets final state in proton-proton collisions at √s = 13 TeV
Tumasyan, Armen
Aceleradores de partículas
Bosons de higgs
Colisões proton-proton
Hadron-Hadron scattering
Higgs Physics
title_short Search for nonresonant Higgs boson pair production in the four leptons plus twob jets final state in proton-proton collisions at √s = 13 TeV
title_full Search for nonresonant Higgs boson pair production in the four leptons plus twob jets final state in proton-proton collisions at √s = 13 TeV
title_fullStr Search for nonresonant Higgs boson pair production in the four leptons plus twob jets final state in proton-proton collisions at √s = 13 TeV
title_full_unstemmed Search for nonresonant Higgs boson pair production in the four leptons plus twob jets final state in proton-proton collisions at √s = 13 TeV
title_sort Search for nonresonant Higgs boson pair production in the four leptons plus twob jets final state 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
Bosons de higgs
Colisões proton-proton
topic Aceleradores de partículas
Bosons de higgs
Colisões proton-proton
Hadron-Hadron scattering
Higgs Physics
dc.subject.eng.fl_str_mv Hadron-Hadron scattering
Higgs Physics
description The first search for nonresonant production of Higgs boson pairs (HH) with one H decaying into four leptons and the other into a pair of b quarks is presented, using proton-proton collisions recorded at a center-of-mass energy of √ s = 13 TeV by the CMS experiment. The analyzed data correspond to an integrated luminosity of 138 fb−1 . A 95% confidence level upper limit of 32.4 is set on the signal strength modifier µ, defined as the ratio of the observed HH production rate in the HH → ZZ∗ bb → 4`bb decay channel to the standard model (SM) expectation. Possible modifications of the H trilinear coupling λHHH with respect to the SM value are investigated. The coupling modifier κλ, defined as λHHH divided by its SM prediction, is constrained to be within the observed (expected) range −8.8 (−9.8) < κλ < 13.4 (15.0) at 95% confidence level.
publishDate 2023
dc.date.accessioned.fl_str_mv 2023-12-19T03:25:24Z
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
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/270387
dc.identifier.issn.pt_BR.fl_str_mv 1029-8479
dc.identifier.nrb.pt_BR.fl_str_mv 001186844
identifier_str_mv 1029-8479
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url http://hdl.handle.net/10183/270387
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. 6 (June 2023), 130, 40 p.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRGS
instname:Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
instacron_str UFRGS
institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
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