Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector
- Autores
- Alconada Verzini, María Josefina; Alonso, Francisco; Arduh, Francisco Anuar; Dova, María Teresa; Hoya, Joaquín; Monticelli, Fernando Gabriel; Wahlberg, Hernán Pablo
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A search for the associated production of the Higgs boson with a top quark pair (tt̄H) is reported. The search is performed in multilepton final states using a data set corresponding to an integrated luminosity of 36.1 fb⁻¹ of proton–proton collision data recorded by the ATLAS experiment at a center-of-mass energy √s = 13 TeV at the Large Hadron Collider. Higgs boson decays to WW, ττ, and ZZ are targeted. Seven final states, categorized by the number and flavor of charged-lepton candidates, are examined for the presence of the Standard Model Higgs boson with a mass of 125 GeV and a pair of top quarks. An excess of events over the expected background from Standard Model processes is found with an observed significance of 4.1 standard deviations, compared to an expectation of 2.8 standard deviations. The best fit for the tt̄H production cross section is σ(tt̄H) = 790⁺²³⁰₋²¹⁰ fb, in agreement with the Standard Model prediction of 507⁺³⁵₋⁵⁰ fb. The combination of this result with other tt̄H searches from the ATLAS experiment using the Higgs boson decay modes to bb̄, γγ, and ZZ* → 4ℓ has an observed significance of 4.2 standard deviations, compared to an expectation of 3.8 standard deviations. This provides evidence for the tt̄H production mode.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Instituto de Física La Plata - Materia
-
Física
Top quark
Higgs multilepton decays
ATLAS evidence - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/193546
Ver los metadatos del registro completo
| id |
SEDICI_2c2941519b034ffa723625bb3aa46238 |
|---|---|
| oai_identifier_str |
oai:sedici.unlp.edu.ar:10915/193546 |
| network_acronym_str |
SEDICI |
| repository_id_str |
1329 |
| network_name_str |
SEDICI (UNLP) |
| spelling |
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detectorAlconada Verzini, María JosefinaAlonso, FranciscoArduh, Francisco AnuarDova, María TeresaHoya, JoaquínMonticelli, Fernando GabrielWahlberg, Hernán PabloFísicaTop quarkHiggs multilepton decaysATLAS evidenceA search for the associated production of the Higgs boson with a top quark pair (tt̄H) is reported. The search is performed in multilepton final states using a data set corresponding to an integrated luminosity of 36.1 fb⁻¹ of proton–proton collision data recorded by the ATLAS experiment at a center-of-mass energy √s = 13 TeV at the Large Hadron Collider. Higgs boson decays to WW, ττ, and ZZ are targeted. Seven final states, categorized by the number and flavor of charged-lepton candidates, are examined for the presence of the Standard Model Higgs boson with a mass of 125 GeV and a pair of top quarks. An excess of events over the expected background from Standard Model processes is found with an observed significance of 4.1 standard deviations, compared to an expectation of 2.8 standard deviations. The best fit for the tt̄H production cross section is σ(tt̄H) = 790⁺²³⁰₋²¹⁰ fb, in agreement with the Standard Model prediction of 507⁺³⁵₋⁵⁰ fb. The combination of this result with other tt̄H searches from the ATLAS experiment using the Higgs boson decay modes to bb̄, γγ, and ZZ* → 4ℓ has an observed significance of 4.2 standard deviations, compared to an expectation of 3.8 standard deviations. This provides evidence for the tt̄H production mode.La lista completa de autores que integran el documento puede consultarse en el archivo.Instituto de Física La Plata2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/193546enginfo:eu-repo/semantics/altIdentifier/issn/2470-0029info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.97.072003info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2026-05-13T12:59:57Zoai:sedici.unlp.edu.ar:10915/193546Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-05-13 12:59:58.586SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector |
| title |
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector |
| spellingShingle |
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector Alconada Verzini, María Josefina Física Top quark Higgs multilepton decays ATLAS evidence |
| title_short |
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector |
| title_full |
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector |
| title_fullStr |
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector |
| title_full_unstemmed |
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector |
| title_sort |
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector |
| dc.creator.none.fl_str_mv |
Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo |
| author |
Alconada Verzini, María Josefina |
| author_facet |
Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo |
| author_role |
author |
| author2 |
Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo |
| author2_role |
author author author author author author |
| dc.subject.none.fl_str_mv |
Física Top quark Higgs multilepton decays ATLAS evidence |
| topic |
Física Top quark Higgs multilepton decays ATLAS evidence |
| dc.description.none.fl_txt_mv |
A search for the associated production of the Higgs boson with a top quark pair (tt̄H) is reported. The search is performed in multilepton final states using a data set corresponding to an integrated luminosity of 36.1 fb⁻¹ of proton–proton collision data recorded by the ATLAS experiment at a center-of-mass energy √s = 13 TeV at the Large Hadron Collider. Higgs boson decays to WW, ττ, and ZZ are targeted. Seven final states, categorized by the number and flavor of charged-lepton candidates, are examined for the presence of the Standard Model Higgs boson with a mass of 125 GeV and a pair of top quarks. An excess of events over the expected background from Standard Model processes is found with an observed significance of 4.1 standard deviations, compared to an expectation of 2.8 standard deviations. The best fit for the tt̄H production cross section is σ(tt̄H) = 790⁺²³⁰₋²¹⁰ fb, in agreement with the Standard Model prediction of 507⁺³⁵₋⁵⁰ fb. The combination of this result with other tt̄H searches from the ATLAS experiment using the Higgs boson decay modes to bb̄, γγ, and ZZ* → 4ℓ has an observed significance of 4.2 standard deviations, compared to an expectation of 3.8 standard deviations. This provides evidence for the tt̄H production mode. La lista completa de autores que integran el documento puede consultarse en el archivo. Instituto de Física La Plata |
| description |
A search for the associated production of the Higgs boson with a top quark pair (tt̄H) is reported. The search is performed in multilepton final states using a data set corresponding to an integrated luminosity of 36.1 fb⁻¹ of proton–proton collision data recorded by the ATLAS experiment at a center-of-mass energy √s = 13 TeV at the Large Hadron Collider. Higgs boson decays to WW, ττ, and ZZ are targeted. Seven final states, categorized by the number and flavor of charged-lepton candidates, are examined for the presence of the Standard Model Higgs boson with a mass of 125 GeV and a pair of top quarks. An excess of events over the expected background from Standard Model processes is found with an observed significance of 4.1 standard deviations, compared to an expectation of 2.8 standard deviations. The best fit for the tt̄H production cross section is σ(tt̄H) = 790⁺²³⁰₋²¹⁰ fb, in agreement with the Standard Model prediction of 507⁺³⁵₋⁵⁰ fb. The combination of this result with other tt̄H searches from the ATLAS experiment using the Higgs boson decay modes to bb̄, γγ, and ZZ* → 4ℓ has an observed significance of 4.2 standard deviations, compared to an expectation of 3.8 standard deviations. This provides evidence for the tt̄H production mode. |
| publishDate |
2018 |
| dc.date.none.fl_str_mv |
2018 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/193546 |
| url |
http://sedici.unlp.edu.ar/handle/10915/193546 |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/2470-0029 info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.97.072003 |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
| eu_rights_str_mv |
openAccess |
| rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.source.none.fl_str_mv |
reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
| reponame_str |
SEDICI (UNLP) |
| collection |
SEDICI (UNLP) |
| instname_str |
Universidad Nacional de La Plata |
| instacron_str |
UNLP |
| institution |
UNLP |
| repository.name.fl_str_mv |
SEDICI (UNLP) - Universidad Nacional de La Plata |
| repository.mail.fl_str_mv |
alira@sedici.unlp.edu.ar |
| _version_ |
1865172500912013312 |
| score |
13.115601 |