Search for light Higgs bosons from supersymmetric cascade decays in pp 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/10183/270821 |
Resumo: | A search is reported for pairs of light Higgs bosons (H1) produced in supersymmetric cascade decays in final states with small missing transverse momentum. A data set of LHC pp collisions collected with the CMS detector at √s = 13 TeV and corresponding to an integrated luminosity of 138 fb−1 is used. The search targets events where both H1 bosons decay into bb pairs that are reconstructed ¯ as large-radius jets using substructure techniques. No evidence is found for an excess of events beyond the background expectations of the standard model (SM). Results from the search are interpreted in the next-to-minimal supersymmetric extension of the SM, where a “singlino” of small mass leads to squark and gluino cascade decays that can predominantly end in a highly Lorentz-boosted singlet-like H1 and a singlino-like neutralino of small transverse momentum. Upper limits are set on the product of the squark or gluino pair production cross section and the square of the bb branching ¯ fraction of the H1 in a benchmark model containing almost mass-degenerate gluinos and light-flavour squarks. Under the assumption of an SM-like H1 → bb branching fraction, H ¯ 1 bosons with masses in the range 40–120 GeV arising from the decays of squarks or gluinos with a mass of 1200–2500 GeV are excluded at 95% confidence level. |
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Tumasyan, ArmenSilveira, Gustavo Gil daBernardes, César AugustoCMS Collaboration2024-01-11T03:25:10Z20231434-6044http://hdl.handle.net/10183/270821001189804A search is reported for pairs of light Higgs bosons (H1) produced in supersymmetric cascade decays in final states with small missing transverse momentum. A data set of LHC pp collisions collected with the CMS detector at √s = 13 TeV and corresponding to an integrated luminosity of 138 fb−1 is used. The search targets events where both H1 bosons decay into bb pairs that are reconstructed ¯ as large-radius jets using substructure techniques. No evidence is found for an excess of events beyond the background expectations of the standard model (SM). Results from the search are interpreted in the next-to-minimal supersymmetric extension of the SM, where a “singlino” of small mass leads to squark and gluino cascade decays that can predominantly end in a highly Lorentz-boosted singlet-like H1 and a singlino-like neutralino of small transverse momentum. Upper limits are set on the product of the squark or gluino pair production cross section and the square of the bb branching ¯ fraction of the H1 in a benchmark model containing almost mass-degenerate gluinos and light-flavour squarks. Under the assumption of an SM-like H1 → bb branching fraction, H ¯ 1 bosons with masses in the range 40–120 GeV arising from the decays of squarks or gluinos with a mass of 1200–2500 GeV are excluded at 95% confidence level.application/pdfengThe European physical journal. C, Particles and fields. Berlin. Vol. 83, no. 7 (July 2023), 571, 27 p.Aceleradores de partículasColisões proton-protonBosons de higgsSearch for light Higgs bosons from supersymmetric cascade decays in pp 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:UFRGSTEXT001189804.pdf.txt001189804.pdf.txtExtracted Texttext/plain107501http://www.lume.ufrgs.br/bitstream/10183/270821/2/001189804.pdf.txt8fbb53870e20dd8f02664f0e0cf5a9b5MD52ORIGINAL001189804.pdfTexto completo (inglês)application/pdf5787030http://www.lume.ufrgs.br/bitstream/10183/270821/1/001189804.pdf5327b041301f6014572e4bbe628b6f8bMD5110183/2708212024-01-12 04:28:11.900861oai:www.lume.ufrgs.br:10183/270821Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-01-12T06:28:11Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Search for light Higgs bosons from supersymmetric cascade decays in pp collisions at √s = 13 TeV |
title |
Search for light Higgs bosons from supersymmetric cascade decays in pp collisions at √s = 13 TeV |
spellingShingle |
Search for light Higgs bosons from supersymmetric cascade decays in pp collisions at √s = 13 TeV Tumasyan, Armen Aceleradores de partículas Colisões proton-proton Bosons de higgs |
title_short |
Search for light Higgs bosons from supersymmetric cascade decays in pp collisions at √s = 13 TeV |
title_full |
Search for light Higgs bosons from supersymmetric cascade decays in pp collisions at √s = 13 TeV |
title_fullStr |
Search for light Higgs bosons from supersymmetric cascade decays in pp collisions at √s = 13 TeV |
title_full_unstemmed |
Search for light Higgs bosons from supersymmetric cascade decays in pp collisions at √s = 13 TeV |
title_sort |
Search for light Higgs bosons from supersymmetric cascade decays in pp 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 Colisões proton-proton Bosons de higgs |
topic |
Aceleradores de partículas Colisões proton-proton Bosons de higgs |
description |
A search is reported for pairs of light Higgs bosons (H1) produced in supersymmetric cascade decays in final states with small missing transverse momentum. A data set of LHC pp collisions collected with the CMS detector at √s = 13 TeV and corresponding to an integrated luminosity of 138 fb−1 is used. The search targets events where both H1 bosons decay into bb pairs that are reconstructed ¯ as large-radius jets using substructure techniques. No evidence is found for an excess of events beyond the background expectations of the standard model (SM). Results from the search are interpreted in the next-to-minimal supersymmetric extension of the SM, where a “singlino” of small mass leads to squark and gluino cascade decays that can predominantly end in a highly Lorentz-boosted singlet-like H1 and a singlino-like neutralino of small transverse momentum. Upper limits are set on the product of the squark or gluino pair production cross section and the square of the bb branching ¯ fraction of the H1 in a benchmark model containing almost mass-degenerate gluinos and light-flavour squarks. Under the assumption of an SM-like H1 → bb branching fraction, H ¯ 1 bosons with masses in the range 40–120 GeV arising from the decays of squarks or gluinos with a mass of 1200–2500 GeV are excluded at 95% confidence level. |
publishDate |
2023 |
dc.date.issued.fl_str_mv |
2023 |
dc.date.accessioned.fl_str_mv |
2024-01-11T03:25:10Z |
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/10183/270821 |
dc.identifier.issn.pt_BR.fl_str_mv |
1434-6044 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001189804 |
identifier_str_mv |
1434-6044 001189804 |
url |
http://hdl.handle.net/10183/270821 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The European physical journal. C, Particles and fields. Berlin. Vol. 83, no. 7 (July 2023), 571, 27 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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