Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector
- Autores
- Alconada Verzini, María Josefina; Alonso, Francisco; Arduh, Francisco Anuar; Dova, María Teresa; Monticelli, Fernando Gabriel; Wahlberg, Hernán Pablo; The ATLAS Collaboration
- Año de publicación
- 2015
- 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 is performed in multilepton final states using 20.3 fb-1 of proton–proton collision data recorded by the ATLAS experiment at √s = 8 TeV at the Large Hadron Collider. Five final states, targeting the decays H → WW* , ττ, and ZZ* , are examined for the presence of the Standard Model (SM) Higgs boson: two same-charge light leptons (e or μ) without a hadronically decaying τ lepton; three light leptons; two same-charge light leptons with a hadronically decaying τ lepton; four light leptons; and one light lepton and two hadronically decaying τ leptons. No significant excess of events is observed above the background expectation. The best fit for the t¯tH production cross section, assuming a Higgs boson mass of 125 GeV, is 2.1+1.4-1.2 times the SM expectation, and the observed (expected) upper limit at the 95% confidence level is 4.7 (2.4) times the SM rate. The p-value for compatibility with the background-only hypothesis is 1.8σ ; the expectation in the presence of a Standard Model signal is 0.9σ .
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
Física
Higgs boson
top quark
proton-proton collisions
ATLAS detector - 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:10915/80413
Ver los metadatos del registro completo
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Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detectorAlconada Verzini, María JosefinaAlonso, FranciscoArduh, Francisco AnuarDova, María TeresaMonticelli, Fernando GabrielWahlberg, Hernán PabloThe ATLAS CollaborationCiencias ExactasFísicaHiggs bosontop quarkproton-proton collisionsATLAS detectorA search for the associated production of the Higgs boson with a top quark pair is performed in multilepton final states using 20.3 fb<sup>-1</sup> of proton–proton collision data recorded by the ATLAS experiment at √s = 8 TeV at the Large Hadron Collider. Five final states, targeting the decays H → WW* , ττ, and ZZ* , are examined for the presence of the Standard Model (SM) Higgs boson: two same-charge light leptons (e or μ) without a hadronically decaying τ lepton; three light leptons; two same-charge light leptons with a hadronically decaying τ lepton; four light leptons; and one light lepton and two hadronically decaying τ leptons. No significant excess of events is observed above the background expectation. The best fit for the t¯tH production cross section, assuming a Higgs boson mass of 125 GeV, is 2.1<sup>+1.4</sup><sub>-1.2</sub> times the SM expectation, and the observed (expected) upper limit at the 95% confidence level is 4.7 (2.4) times the SM rate. The p-value for compatibility with the background-only hypothesis is 1.8σ ; the expectation in the presence of a Standard Model signal is 0.9σ .Facultad de Ciencias Exactas2015-08-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf519-541http://sedici.unlp.edu.ar/handle/10915/80413enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2015.07.079info: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:UNLP2025-09-29T11:14:47Zoai:sedici.unlp.edu.ar:10915/80413Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:14:47.979SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector |
| title |
Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector |
| spellingShingle |
Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector Alconada Verzini, María Josefina Ciencias Exactas Física Higgs boson top quark proton-proton collisions ATLAS detector |
| title_short |
Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector |
| title_full |
Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector |
| title_fullStr |
Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector |
| title_full_unstemmed |
Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector |
| title_sort |
Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector |
| dc.creator.none.fl_str_mv |
Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author |
Alconada Verzini, María Josefina |
| author_facet |
Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author_role |
author |
| author2 |
Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author2_role |
author author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Física Higgs boson top quark proton-proton collisions ATLAS detector |
| topic |
Ciencias Exactas Física Higgs boson top quark proton-proton collisions ATLAS detector |
| dc.description.none.fl_txt_mv |
A search for the associated production of the Higgs boson with a top quark pair is performed in multilepton final states using 20.3 fb<sup>-1</sup> of proton–proton collision data recorded by the ATLAS experiment at √s = 8 TeV at the Large Hadron Collider. Five final states, targeting the decays H → WW* , ττ, and ZZ* , are examined for the presence of the Standard Model (SM) Higgs boson: two same-charge light leptons (e or μ) without a hadronically decaying τ lepton; three light leptons; two same-charge light leptons with a hadronically decaying τ lepton; four light leptons; and one light lepton and two hadronically decaying τ leptons. No significant excess of events is observed above the background expectation. The best fit for the t¯tH production cross section, assuming a Higgs boson mass of 125 GeV, is 2.1<sup>+1.4</sup><sub>-1.2</sub> times the SM expectation, and the observed (expected) upper limit at the 95% confidence level is 4.7 (2.4) times the SM rate. The p-value for compatibility with the background-only hypothesis is 1.8σ ; the expectation in the presence of a Standard Model signal is 0.9σ . Facultad de Ciencias Exactas |
| description |
A search for the associated production of the Higgs boson with a top quark pair is performed in multilepton final states using 20.3 fb<sup>-1</sup> of proton–proton collision data recorded by the ATLAS experiment at √s = 8 TeV at the Large Hadron Collider. Five final states, targeting the decays H → WW* , ττ, and ZZ* , are examined for the presence of the Standard Model (SM) Higgs boson: two same-charge light leptons (e or μ) without a hadronically decaying τ lepton; three light leptons; two same-charge light leptons with a hadronically decaying τ lepton; four light leptons; and one light lepton and two hadronically decaying τ leptons. No significant excess of events is observed above the background expectation. The best fit for the t¯tH production cross section, assuming a Higgs boson mass of 125 GeV, is 2.1<sup>+1.4</sup><sub>-1.2</sub> times the SM expectation, and the observed (expected) upper limit at the 95% confidence level is 4.7 (2.4) times the SM rate. The p-value for compatibility with the background-only hypothesis is 1.8σ ; the expectation in the presence of a Standard Model signal is 0.9σ . |
| publishDate |
2015 |
| dc.date.none.fl_str_mv |
2015-08-05 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/80413 |
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http://sedici.unlp.edu.ar/handle/10915/80413 |
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eng |
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eng |
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openAccess |
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