%0 Journal Article %T Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the llbb and llWW final states in pp collisions at root s=13 TeV with the ATLAS detector %A ATLAS Collaboration (Aad, G. et al %A Aparisi Pozo, J. A. %A Bailey, A. J. %A Cabrera Urban, S. %A Cardillo, F. %A Castillo, F. L. %A Castillo Gimenez, V. %A Costa, M. J. %A Escobar, C. %A Estrada Pastor, O. %A Ferrer, A. %A Fiorini, L. %A Fullana Torregrosa, E. %A Fuster, J. %A Garcia, C. %A Garcia Navarro, J. E. %A Gonzalez de la Hoz, S. %A Gonzalvo Rodriguez, G. R. %A Guerrero Rojas, J. G. R. %A Higon-Rodriguez, E. %A Lacasta, C. %A Lozano Bahilo, J. J. %A Madaffari, D. %A Mamuzic, J. %A Marti-Garcia, S. %A Martinez Agullo, P. %A Mitsou, V. A. %A Moreno Llacer, M. %A Poveda, J. %A Prades IbaƱez, A. %A Rodriguez Bosca, S. %A Ruiz-Martinez, A. %A Sabatini, P. %A Salt, J. %A Sayago Galvan, I. %A Soldevila, U. %A Sanchez, J. %A Torro Pastor, E. %A Valero, A. %A Valls Ferrer, J. A. %A Villaplana Perez, M. %A Vos, M. %J European Physical Journal C %D 2021 %V 81 %N 5 %@ 1434-6044 %F ATLASCollaborationAad_etal2021 %O WOS:000662180600001 %O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4878), last updated on Sat, 10 Jul 2021 12:35:28 +0000 %X A search for a heavy neutral Higgs boson, A, decaying into a Z boson and another heavy Higgs boson, H, is performed using a data sample corresponding to an integrated luminosity of 139 fb(-1) from proton-proton collisions at root s = 13 TeV recorded by the ATLAS detector at the LHC. The search considers the Z boson decaying into electrons or muons and the H boson into a pair of b-quarks or W bosons. The mass range considered is 230-800 GeV for the A boson and 130-700 GeV for the H boson. The data are in good agreement with the background predicted by the Standard Model, and therefore 95% confidence-level upper limits for sigma x B( A -> ZH) x B(H -> bb or H -> WW) are set. The upper limits are in the range 0.0062-0.380 pb for the H. bb channel and in the range 0.023-8.9 pb for the H -> WW channel. An interpretation of the results in the context of two-Higgs-doublet models is also given. %R 10.1140/epjc/s10052-021-09117-5 %U https://arxiv.org/abs/2011.05639 %U https://doi.org/10.1140/epjc/s10052-021-09117-5 %P 396 - 36pp