Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector

Detalhes bibliográficos
Autor(a) principal: ATLAS collaboration (2929 authors)
Data de Publicação: 2018
Outros Autores: Aguilar Saavedra, Juan Antonio, Amor Dos Santos, Susana Patricia, Araque Espinosa, Juan Pedro, Castro, Nuno Filipe, Conde Muino, Patricia, Da Cunha Sargedas De Sousa, Mario Jose, Dias DO Vale, Tiago, Faisca Rodrigues Pereira, Rui Miguel, Fiolhais, Miguel, Galhardo, Bruno, Gomes, Agostinho, Goncalo, Ricardo, Jorge, Pedro, Machado Miguens, Joana, Maio, Amelia, Maneira, Jose, Mendes Gouveia, Emanuel Demetrio, Oleiro Seabra, Luis Filipe, Onofre, Antonio, Costa Batalha Pedro, Rute, Pereira Peixoto, Ana Paula, Santos, Helena, Saraiva, Joao, Silva, Jose Manuel, Tavares Delgado, Ademar, Veloso, Filipe, Wolters, Helmut
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.26/27653
Resumo: The observation of Higgs boson production in association with a top quark pair ( tt¯H ), based on the analysis of proton–proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider, is presented. Using data corresponding to integrated luminosities of up to 79.8 fb −1 , and considering Higgs boson decays into bb¯ , WW⁎ , τ+τ− , γγ , and ZZ⁎ , the observed significance is 5.8 standard deviations, compared to an expectation of 4.9 standard deviations. Combined with the tt¯H searches using a dataset corresponding to integrated luminosities of 4.5 fb −1 at 7 TeV and 20.3 fb −1 at 8 TeV, the observed (expected) significance is 6.3 (5.1) standard deviations. Assuming Standard Model branching fractions, the total tt¯H production cross section at 13 TeV is measured to be 670 ± 90 (stat.) −100+110 (syst.) fb, in agreement with the Standard Model prediction.
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spelling Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detectorThe observation of Higgs boson production in association with a top quark pair ( tt¯H ), based on the analysis of proton–proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider, is presented. Using data corresponding to integrated luminosities of up to 79.8 fb −1 , and considering Higgs boson decays into bb¯ , WW⁎ , τ+τ− , γγ , and ZZ⁎ , the observed significance is 5.8 standard deviations, compared to an expectation of 4.9 standard deviations. Combined with the tt¯H searches using a dataset corresponding to integrated luminosities of 4.5 fb −1 at 7 TeV and 20.3 fb −1 at 8 TeV, the observed (expected) significance is 6.3 (5.1) standard deviations. Assuming Standard Model branching fractions, the total tt¯H production cross section at 13 TeV is measured to be 670 ± 90 (stat.) −100+110 (syst.) fb, in agreement with the Standard Model prediction.Repositório ComumATLAS collaboration (2929 authors)Aguilar Saavedra, Juan AntonioAmor Dos Santos, Susana PatriciaAraque Espinosa, Juan PedroCastro, Nuno FilipeConde Muino, PatriciaDa Cunha Sargedas De Sousa, Mario JoseDias DO Vale, TiagoFaisca Rodrigues Pereira, Rui MiguelFiolhais, MiguelGalhardo, BrunoGomes, AgostinhoGoncalo, RicardoJorge, PedroMachado Miguens, JoanaMaio, AmeliaManeira, JoseMendes Gouveia, Emanuel DemetrioOleiro Seabra, Luis FilipeOnofre, AntonioCosta Batalha Pedro, RutePereira Peixoto, Ana PaulaSantos, HelenaSaraiva, JoaoSilva, Jose ManuelTavares Delgado, AdemarVeloso, FilipeWolters, Helmut2019-02-05T16:28:35Z2018-09-102019-02-05T16:28:35Z2018-09-10T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.26/27653enghttp://dx.doi.org/10.1016/j.physletb.2018.07.035info: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:RCAAP2024-05-16T07:39:18Zoai:comum.rcaap.pt:10400.26/27653Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-16T07:39:18Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
title Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
spellingShingle Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
ATLAS collaboration (2929 authors)
title_short Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
title_full Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
title_fullStr Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
title_full_unstemmed Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
title_sort Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
author ATLAS collaboration (2929 authors)
author_facet ATLAS collaboration (2929 authors)
Aguilar Saavedra, Juan Antonio
Amor Dos Santos, Susana Patricia
Araque Espinosa, Juan Pedro
Castro, Nuno Filipe
Conde Muino, Patricia
Da Cunha Sargedas De Sousa, Mario Jose
Dias DO Vale, Tiago
Faisca Rodrigues Pereira, Rui Miguel
Fiolhais, Miguel
Galhardo, Bruno
Gomes, Agostinho
Goncalo, Ricardo
Jorge, Pedro
Machado Miguens, Joana
Maio, Amelia
Maneira, Jose
Mendes Gouveia, Emanuel Demetrio
Oleiro Seabra, Luis Filipe
Onofre, Antonio
Costa Batalha Pedro, Rute
Pereira Peixoto, Ana Paula
Santos, Helena
Saraiva, Joao
Silva, Jose Manuel
Tavares Delgado, Ademar
Veloso, Filipe
Wolters, Helmut
author_role author
author2 Aguilar Saavedra, Juan Antonio
Amor Dos Santos, Susana Patricia
Araque Espinosa, Juan Pedro
Castro, Nuno Filipe
Conde Muino, Patricia
Da Cunha Sargedas De Sousa, Mario Jose
Dias DO Vale, Tiago
Faisca Rodrigues Pereira, Rui Miguel
Fiolhais, Miguel
Galhardo, Bruno
Gomes, Agostinho
Goncalo, Ricardo
Jorge, Pedro
Machado Miguens, Joana
Maio, Amelia
Maneira, Jose
Mendes Gouveia, Emanuel Demetrio
Oleiro Seabra, Luis Filipe
Onofre, Antonio
Costa Batalha Pedro, Rute
Pereira Peixoto, Ana Paula
Santos, Helena
Saraiva, Joao
Silva, Jose Manuel
Tavares Delgado, Ademar
Veloso, Filipe
Wolters, Helmut
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório Comum
dc.contributor.author.fl_str_mv ATLAS collaboration (2929 authors)
Aguilar Saavedra, Juan Antonio
Amor Dos Santos, Susana Patricia
Araque Espinosa, Juan Pedro
Castro, Nuno Filipe
Conde Muino, Patricia
Da Cunha Sargedas De Sousa, Mario Jose
Dias DO Vale, Tiago
Faisca Rodrigues Pereira, Rui Miguel
Fiolhais, Miguel
Galhardo, Bruno
Gomes, Agostinho
Goncalo, Ricardo
Jorge, Pedro
Machado Miguens, Joana
Maio, Amelia
Maneira, Jose
Mendes Gouveia, Emanuel Demetrio
Oleiro Seabra, Luis Filipe
Onofre, Antonio
Costa Batalha Pedro, Rute
Pereira Peixoto, Ana Paula
Santos, Helena
Saraiva, Joao
Silva, Jose Manuel
Tavares Delgado, Ademar
Veloso, Filipe
Wolters, Helmut
description The observation of Higgs boson production in association with a top quark pair ( tt¯H ), based on the analysis of proton–proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider, is presented. Using data corresponding to integrated luminosities of up to 79.8 fb −1 , and considering Higgs boson decays into bb¯ , WW⁎ , τ+τ− , γγ , and ZZ⁎ , the observed significance is 5.8 standard deviations, compared to an expectation of 4.9 standard deviations. Combined with the tt¯H searches using a dataset corresponding to integrated luminosities of 4.5 fb −1 at 7 TeV and 20.3 fb −1 at 8 TeV, the observed (expected) significance is 6.3 (5.1) standard deviations. Assuming Standard Model branching fractions, the total tt¯H production cross section at 13 TeV is measured to be 670 ± 90 (stat.) −100+110 (syst.) fb, in agreement with the Standard Model prediction.
publishDate 2018
dc.date.none.fl_str_mv 2018-09-10
2018-09-10T00:00:00Z
2019-02-05T16:28:35Z
2019-02-05T16:28:35Z
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/10400.26/27653
url http://hdl.handle.net/10400.26/27653
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.physletb.2018.07.035
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 Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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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 Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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