Collider sensitivity to SMEFT heavy-quark operators at one-loop in top-quark processes

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversité Catholique de Louvain-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversität Bonn-
Autor(es): dc.creatorDegrande, C.-
Autor(es): dc.creatorRosenfeld, R.-
Autor(es): dc.creatorVasquez, A.-
Data de aceite: dc.date.accessioned2025-08-21T20:04:40Z-
Data de disponibilização: dc.date.available2025-08-21T20:04:40Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-07-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/JHEP07(2024)114-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/297391-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/297391-
Descrição: dc.descriptionWe study the effects of four-heavy-quark operators in the production of top quarks in the framework of the Standard Model Effective Field Theory (SMEFT) at the LHC. In particular, we compute for the first time the total contribution of the four-top-quark operator which enters only at the one-loop level in the top-quark pair production process. Analytical results at one-loop are presented for the gluon- and quark-initiated sub-processes, which allowed a first complete validation of the SMEFT@NLO in MadGraph5_aMC@NLO. The 95% CL bounds on four-heavy-quark operators from the available top-quark pair and four-top-quark production data are provided, which are complementary to other bounds found in the literature. We focus on the comparison of the sensitivities of the top-quark pair and the four-top-quark production processes, where in the latter case the four-top-quark operator contributes at tree-level. We conclude that the sensitivities of the two processes to four-heavy-quark operators are comparable. The projected sensitivities of both processes at HL-LHC are also presented.-
Descrição: dc.descriptionCentre for Cosmology Particle Physics and Phenomenology (CP3) Université Catholique de Louvain-
Descrição: dc.descriptionICTP South American Institute for Fundamental Research & amp; Instituto de Física Teórica UNESP — Universidade Estadual Paulista, Rua Dr. Bento T. Ferraz 271, SP-
Descrição: dc.descriptionBethe Center for Theoretical Physics Universität Bonn-
Descrição: dc.descriptionICTP South American Institute for Fundamental Research & amp; Instituto de Física Teórica UNESP — Universidade Estadual Paulista, Rua Dr. Bento T. Ferraz 271, SP-
Idioma: dc.languageen-
Relação: dc.relationJournal of High Energy Physics-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectSMEFT-
Palavras-chave: dc.subjectTop Quark-
Título: dc.titleCollider sensitivity to SMEFT heavy-quark operators at one-loop in top-quark processes-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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