Towards recognizing the light facet of the Higgs boson
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/29875 |
Resumo: | The Higgs boson couplings to bottom and top quarks have been measured and agree well with the Standard Model predictions. Decays to lighter quarks and gluons, however, remain elusive. Observing these decays is essential to complete the picture of the Higgs boson interactions. In this work, we present the perspectives for the 14 TeV LHC to observe the Higgs boson decay to gluon jets assembling convolutional neural networks, trained to recognize abstract jet images constructed embodying particle flow information, and boosted decision trees with kinetic information from Higgs-strahlung ZH → ℓ +ℓ− + gg events. We show that this approach might be able to observe Higgs to gluon decays with a significance of around 2.4σ improving significantly previous prospects based on cut-and-count analysis. An upper bound of BR(H → gg)≤1.74 × BRSM (H → gg) at 95% confidence level after 3000 fb−1 of data is obtained using these machine learning techniques. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Towards recognizing the light facet of the Higgs bosonHiggs bosonLight jetsConvolutional neural networksEnsemble learningThe Higgs boson couplings to bottom and top quarks have been measured and agree well with the Standard Model predictions. Decays to lighter quarks and gluons, however, remain elusive. Observing these decays is essential to complete the picture of the Higgs boson interactions. In this work, we present the perspectives for the 14 TeV LHC to observe the Higgs boson decay to gluon jets assembling convolutional neural networks, trained to recognize abstract jet images constructed embodying particle flow information, and boosted decision trees with kinetic information from Higgs-strahlung ZH → ℓ +ℓ− + gg events. We show that this approach might be able to observe Higgs to gluon decays with a significance of around 2.4σ improving significantly previous prospects based on cut-and-count analysis. An upper bound of BR(H → gg)≤1.74 × BRSM (H → gg) at 95% confidence level after 3000 fb−1 of data is obtained using these machine learning techniques.IOP Publishing2020-11-23T17:42:59Z2020-10-28T00:00:00Z2020-10-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/29875eng2632-215310.1088/2632-2153/aba8e6Alves, AlexandreFreitas, Felipe F.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-17T04:06:57ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Towards recognizing the light facet of the Higgs boson |
title |
Towards recognizing the light facet of the Higgs boson |
spellingShingle |
Towards recognizing the light facet of the Higgs boson Alves, Alexandre Higgs boson Light jets Convolutional neural networks Ensemble learning |
title_short |
Towards recognizing the light facet of the Higgs boson |
title_full |
Towards recognizing the light facet of the Higgs boson |
title_fullStr |
Towards recognizing the light facet of the Higgs boson |
title_full_unstemmed |
Towards recognizing the light facet of the Higgs boson |
title_sort |
Towards recognizing the light facet of the Higgs boson |
author |
Alves, Alexandre |
author_facet |
Alves, Alexandre Freitas, Felipe F. |
author_role |
author |
author2 |
Freitas, Felipe F. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Alves, Alexandre Freitas, Felipe F. |
dc.subject.por.fl_str_mv |
Higgs boson Light jets Convolutional neural networks Ensemble learning |
topic |
Higgs boson Light jets Convolutional neural networks Ensemble learning |
description |
The Higgs boson couplings to bottom and top quarks have been measured and agree well with the Standard Model predictions. Decays to lighter quarks and gluons, however, remain elusive. Observing these decays is essential to complete the picture of the Higgs boson interactions. In this work, we present the perspectives for the 14 TeV LHC to observe the Higgs boson decay to gluon jets assembling convolutional neural networks, trained to recognize abstract jet images constructed embodying particle flow information, and boosted decision trees with kinetic information from Higgs-strahlung ZH → ℓ +ℓ− + gg events. We show that this approach might be able to observe Higgs to gluon decays with a significance of around 2.4σ improving significantly previous prospects based on cut-and-count analysis. An upper bound of BR(H → gg)≤1.74 × BRSM (H → gg) at 95% confidence level after 3000 fb−1 of data is obtained using these machine learning techniques. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-11-23T17:42:59Z 2020-10-28T00:00:00Z 2020-10-28 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/29875 |
url |
http://hdl.handle.net/10773/29875 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2632-2153 10.1088/2632-2153/aba8e6 |
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.publisher.none.fl_str_mv |
IOP Publishing |
publisher.none.fl_str_mv |
IOP Publishing |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
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repository.mail.fl_str_mv |
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_version_ |
1777303564933136385 |