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Title

Higgs boson production cross-section measurements and their EFT interpretation in the 4 ℓ decay channel at √s= 13 TeV with the ATLAS detector

AuthorsATLAS Collaboration; Aparisi, Pozo, J.A.; Bailey, A.J.; Cabrera, Susana ; Castillo, F.L.; Castillo Mª Victoria; Costa, M.J.; Escobar, Carlos ; Estrada, Oscar; Ferrer, Antonio ; Fiorini, L. ; Fullana, Esteban ; Fuster, Juan ; García García, Carmen ; García Navarro, José Enrique ; González de la Hoz, Santiago ; Gonzalvo Rodríguez, Galo Rafael; Guerrero Rojas, J.G.R.; Higón, Emilio ; Lacasta Llácer, Carlos ; Lozano Bahilo, José J.; Madaffari, Daniele; Mamuzic, Judita; Martí García, Salvador ; Martinez Agullo, Pablo; Mitsou, Vasiliki A. ; Moreno Llácer, María ; Poveda, Joaquín ; Rodriguez Bosca, S.; Ruiz-Martinez, A.; Salt, José ; Santra, A.; Sayago Galvan, Ivan; Soldevila, U.; Sánchez Martínez, Javier ; Valero, Alberto ; Valls Ferrer, Juan Antonio ; Vos, M.
Issue DateOct-2020
PublisherSpringer
CitationEuropean Physical Journal C 80: 957 (2020)
AbstractHiggs boson properties are studied in the four-lepton decay channel (where lepton = e, μ) using 139 fb of proton–proton collision data recorded at s=13 TeV by the ATLAS experiment at the Large Hadron Collider. The inclusive cross-section times branching ratio for H→ ZZ decay is measured to be 1.34 ± 0.12 pb for a Higgs boson with absolute rapidity below 2.5, in good agreement with the Standard Model prediction of 1.33 ± 0.08 pb. Cross-sections times branching ratio are measured for the main Higgs boson production modes in several exclusive phase-space regions. The measurements are interpreted in terms of coupling modifiers and of the tensor structure of Higgs boson interactions using an effective field theory approach. Exclusion limits are set on the CP-even and CP-odd ‘beyond the Standard Model’ couplings of the Higgs boson to vector bosons, gluons and top quarks.
Publisher version (URL)http://dx.doi.org/10.1140/epjc/s10052-020-8227-9
URIhttp://hdl.handle.net/10261/230035
Identifiersdoi: 10.1140/epjc/s10052-020-8227-9
issn: 1434-6052
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