CP Properties of Higgs Boson Interactions with Top Quarks in the t͞tH and tH Processes Using H → γγ with the ATLAS Detector
- Autores
- Alonso, Francisco; Arduh, Francisco Anuar; Dova, María Teresa; Hoya, Joaquín; Monticelli, Fernando Gabriel; Orellana, Gonzalo Enrique; Wahlberg, Hernán Pablo; The ATLAS Collaboration
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A study of the charge conjugation and parity (CP) properties of the interaction between the Higgs boson and top quarks is presented. Higgs bosons are identified via the diphoton decay channel (H→γγ), and their production in association with a top quark pair t͞tH or single top quark (tH) is studied. The analysis uses 139 fb⁻¹ of proton-proton collision data recorded at a center-of-mass energy of √s=13 TeV with the ATLAS detector at the Large Hadron Collider. Assuming a CP-even coupling, the t͞tH process is observed with a significance of 5.2 standard deviations. The measured cross section times H→γγ branching ratio is 1.64+0.38-0.36(stat)+0.17-0.14(sys) fb, and the measured rate for t͞tH is 1.43+0.33-0.31(stat)+0.21-0.15(sys) times the Standard Model expectation. The tH production process is not observed and an upper limit on its rate of 12 times the Standard Model expectation is set. A CP-mixing angle greater (less) than 43 (-43)° is excluded at 95% confidence level.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Instituto de Física La Plata - Materia
-
Ciencias Exactas
Física
Electroweak interaction
Particle decays
Particle interactions
Particle phenomena
Higgs bosons
Top quark
Hadron colliders - 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:10915/141082
Ver los metadatos del registro completo
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CP Properties of Higgs Boson Interactions with Top Quarks in the t͞tH and tH Processes Using H → γγ with the ATLAS DetectorAlonso, FranciscoArduh, Francisco AnuarDova, María TeresaHoya, JoaquínMonticelli, Fernando GabrielOrellana, Gonzalo EnriqueWahlberg, Hernán PabloThe ATLAS CollaborationCiencias ExactasFísicaElectroweak interactionParticle decaysParticle interactionsParticle phenomenaHiggs bosonsTop quarkHadron collidersA study of the charge conjugation and parity (CP) properties of the interaction between the Higgs boson and top quarks is presented. Higgs bosons are identified via the diphoton decay channel (H→γγ), and their production in association with a top quark pair t͞tH or single top quark (tH) is studied. The analysis uses 139 fb⁻¹ of proton-proton collision data recorded at a center-of-mass energy of √s=13 TeV with the ATLAS detector at the Large Hadron Collider. Assuming a CP-even coupling, the t͞tH process is observed with a significance of 5.2 standard deviations. The measured cross section times H→γγ branching ratio is 1.64<sup>+0.38</sup><sub>-0.36</sub>(stat)<sup>+0.17</sup><sub>-0.14</sub>(sys) fb, and the measured rate for t͞tH is 1.43<sup>+0.33</sup><sub>-0.31</sub>(stat)<sup>+0.21</sup><sub>-0.15</sub>(sys) times the Standard Model expectation. The tH production process is not observed and an upper limit on its rate of 12 times the Standard Model expectation is set. A CP-mixing angle greater (less) than 43 (-43)° is excluded at 95% confidence level.La lista completa de autores que integran el documento puede consultarse en el archivo.Instituto de Física La Plata2020-08info: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/10915/141082enginfo:eu-repo/semantics/altIdentifier/issn/1079-7114info:eu-repo/semantics/altIdentifier/issn/0031-9007info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevlett.125.061802info:eu-repo/semantics/altIdentifier/pmid/32845699info: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:UNLP2025-09-29T11:32:32Zoai:sedici.unlp.edu.ar:10915/141082Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:33.208SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
CP Properties of Higgs Boson Interactions with Top Quarks in the t͞tH and tH Processes Using H → γγ with the ATLAS Detector |
| title |
CP Properties of Higgs Boson Interactions with Top Quarks in the t͞tH and tH Processes Using H → γγ with the ATLAS Detector |
| spellingShingle |
CP Properties of Higgs Boson Interactions with Top Quarks in the t͞tH and tH Processes Using H → γγ with the ATLAS Detector Alonso, Francisco Ciencias Exactas Física Electroweak interaction Particle decays Particle interactions Particle phenomena Higgs bosons Top quark Hadron colliders |
| title_short |
CP Properties of Higgs Boson Interactions with Top Quarks in the t͞tH and tH Processes Using H → γγ with the ATLAS Detector |
| title_full |
CP Properties of Higgs Boson Interactions with Top Quarks in the t͞tH and tH Processes Using H → γγ with the ATLAS Detector |
| title_fullStr |
CP Properties of Higgs Boson Interactions with Top Quarks in the t͞tH and tH Processes Using H → γγ with the ATLAS Detector |
| title_full_unstemmed |
CP Properties of Higgs Boson Interactions with Top Quarks in the t͞tH and tH Processes Using H → γγ with the ATLAS Detector |
| title_sort |
CP Properties of Higgs Boson Interactions with Top Quarks in the t͞tH and tH Processes Using H → γγ with the ATLAS Detector |
| dc.creator.none.fl_str_mv |
Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Orellana, Gonzalo Enrique Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author |
Alonso, Francisco |
| author_facet |
Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Orellana, Gonzalo Enrique Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author_role |
author |
| author2 |
Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Orellana, Gonzalo Enrique Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author2_role |
author author author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Física Electroweak interaction Particle decays Particle interactions Particle phenomena Higgs bosons Top quark Hadron colliders |
| topic |
Ciencias Exactas Física Electroweak interaction Particle decays Particle interactions Particle phenomena Higgs bosons Top quark Hadron colliders |
| dc.description.none.fl_txt_mv |
A study of the charge conjugation and parity (CP) properties of the interaction between the Higgs boson and top quarks is presented. Higgs bosons are identified via the diphoton decay channel (H→γγ), and their production in association with a top quark pair t͞tH or single top quark (tH) is studied. The analysis uses 139 fb⁻¹ of proton-proton collision data recorded at a center-of-mass energy of √s=13 TeV with the ATLAS detector at the Large Hadron Collider. Assuming a CP-even coupling, the t͞tH process is observed with a significance of 5.2 standard deviations. The measured cross section times H→γγ branching ratio is 1.64<sup>+0.38</sup><sub>-0.36</sub>(stat)<sup>+0.17</sup><sub>-0.14</sub>(sys) fb, and the measured rate for t͞tH is 1.43<sup>+0.33</sup><sub>-0.31</sub>(stat)<sup>+0.21</sup><sub>-0.15</sub>(sys) times the Standard Model expectation. The tH production process is not observed and an upper limit on its rate of 12 times the Standard Model expectation is set. A CP-mixing angle greater (less) than 43 (-43)° is excluded at 95% confidence level. La lista completa de autores que integran el documento puede consultarse en el archivo. Instituto de Física La Plata |
| description |
A study of the charge conjugation and parity (CP) properties of the interaction between the Higgs boson and top quarks is presented. Higgs bosons are identified via the diphoton decay channel (H→γγ), and their production in association with a top quark pair t͞tH or single top quark (tH) is studied. The analysis uses 139 fb⁻¹ of proton-proton collision data recorded at a center-of-mass energy of √s=13 TeV with the ATLAS detector at the Large Hadron Collider. Assuming a CP-even coupling, the t͞tH process is observed with a significance of 5.2 standard deviations. The measured cross section times H→γγ branching ratio is 1.64<sup>+0.38</sup><sub>-0.36</sub>(stat)<sup>+0.17</sup><sub>-0.14</sub>(sys) fb, and the measured rate for t͞tH is 1.43<sup>+0.33</sup><sub>-0.31</sub>(stat)<sup>+0.21</sup><sub>-0.15</sub>(sys) times the Standard Model expectation. The tH production process is not observed and an upper limit on its rate of 12 times the Standard Model expectation is set. A CP-mixing angle greater (less) than 43 (-43)° is excluded at 95% confidence level. |
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2020 |
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2020-08 |
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eng |
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