Search for nonresonant pair production of Higgs bosons in the b[bar]bb[bar]b final state in pp collisions at √s=13  TeV with the ATLAS detector

A search for nonresonant Higgs boson pair production in the b¯bb¯b final state is presented. The analysis uses 126 fb−1 of pp collision data at √s=13 TeV collected with the ATLAS detector at the Large Hadron Collider, and targets both the gluon-gluon fusion and vector-boson fusion production modes....

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Autores principales: Aad, Georges (Autor) , Baltes, Lisa Marie (Autor) , Bartels, Falk (Autor) , Castillo, Florencia Luciana (Autor) , Czurylo, Marta (Autor) , Dittmeier, Sebastian (Autor) , Dunford, Monica (Autor) , Franchino, Silvia (Autor) , Junkermann, Thomas (Autor) , Klassen, Martin (Autor) , Mkrtchyan, Tigran (Autor) , Ott, Philipp (Autor) , Rassloff, Damir Fabrice (Autor) , Rodriguez Bosca, Sergi (Autor) , Sauer, Christof (Autor) , Schöning, André (Autor) , Schultz-Coulon, Hans-Christian (Autor) , Sothilingam, Varsiha (Autor) , Stamen, Rainer (Autor) , Starovoitov, Pavel (Autor) , Vigani, Luigi (Autor) , Weber, Sebastian (Autor) , Wessels, Martin (Autor) , Zinßer, Joachim (Autor)
Autor Corporativo: ATLAS Collaboration (Autor)
Formato: Article (Journal)
Lenguaje:inglés
Publicado: 1 September 2023
In: Physical review
Year: 2023, Volumen: 108, Número: 5, Pages: 1-38
ISSN:2470-0029
DOI:10.1103/PhysRevD.108.052003
Acceso en línea:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.108.052003
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.108.052003
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Notas de Autor:G. Aad et al. (ATLAS Collaboration*)
Descripción
Sumario:A search for nonresonant Higgs boson pair production in the b¯bb¯b final state is presented. The analysis uses 126 fb−1 of pp collision data at √s=13 TeV collected with the ATLAS detector at the Large Hadron Collider, and targets both the gluon-gluon fusion and vector-boson fusion production modes. No evidence of the signal is found and the observed (expected) upper limit on the cross section for nonresonant Higgs boson pair production is determined to be 5.4 (8.1) times the Standard Model predicted cross section at 95% confidence level. Constraints are placed on modifiers to the HHH and HHVV couplings. The observed (expected) 2σ constraints on the HHH coupling modifier, κλ, are determined to be [−3.5,11.3] ([−5.4,11.4]), while the corresponding constraints for the HHVV coupling modifier, κ2V, are [−0.0,2.1] ([−0.1,2.1]). In addition, constraints on relevant coefficients are derived in the context of the Standard Model effective field theory and Higgs effective field theory, and upper limits on the HH production cross section are placed in seven Higgs effective field theory benchmark scenarios.
Notas:Veröffentlicht: 5. September 2023
*ATLAS Collaboration: G. Aad, L.M. Baltes, F. Bartels, F.L. Castillo, M.M. Czurylo, M. Dunford, S. Franchino, T. Junkermann, M. Klassen, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, S. Rodriguez Bosca, C. Sauer, A. Schoening, H-C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels, J. Zinsser [und 2869 weitere Personen]
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Descripción Física:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.108.052003