Hayrapetyan, A.Tumasyan, A.Adam, W.Andrejkovic, J. W.Benato, L.Bergauer, T.Lee, J.2025-10-102025-10-1020250370-26931873-2445https://doi.org/10.1016/j.physletb.2025.139568https://hdl.handle.net/20.500.13091/10839Tapper, Alexander/0000-0003-4543-864X; Rantanen, Milla-Maarit/0000-0002-6764-0016; Hall, Geoffrey/0000-0002-6299-8385; Zhang, Yousen/0000-0002-6812-761X; Grandi, Claudio/0000-0001-5998-3070; Viinikainen, Jussi/0000-0003-2530-4265; Lampen, Tapio/0000-0002-8398-4249; Pesaresi, Mark/0000-0002-9759-1083; Wilson, Graham/0000-0003-0917-4763; Vannerom, David/0000-0002-2747-5095; Yazgan, Efe/0000-0001-5732-7950; Garcia, Francisco/0000-0002-4023-7964; Barroso Ferreira, Mapse/0000-0003-3904-0571; Martikainen, Laura/0000-0003-1609-3515; Smith, Nicholas/0000-0002-0324-3054; Chatterjee, Suman/0000-0003-2660-0349; Kyberd, Paul/0000-0002-7353-7090; Giacomelli, Paolo/0000-0002-6368-7220; Luukka, Panja/0000-0003-2340-4641; Csanad, Mate/0000-0002-3154-6925; D'Anzi, Brunella/0000-0002-9361-3142; Mitra, Soureek/0000-0002-3060-2278; Kirschenmann, Henning/0000-0001-7369-2536; Pasztor, Gabriella/0000-0003-0707-9762; Linden, Tomas/0009-0002-4847-8882;A direct search for new heavy neutral Higgs bosons A and H in the t (t) over barZ channel is presented, targeting the process pp -> A -> ZH with H -> t (t) over bar. For the first time, the channel with decays of the Z boson to muons or electrons in association with all-hadronic decays of the t (t) over bar system is targeted. The analysis uses proton-proton collision data collected at the CERN LHC with the CMS experiment at root s = 13 TeV, which correspond to an integrated luminosity of 138 fb(-1). No signal is observed. Upper limits on the product of the cross section and branching fractions are derived for narrow resonances A and H with masses up to 2100 and 2000GeV, respectively, assuming A boson production through gluon fusion. The results are also interpreted within two-Higgs-doublet models, where A and H are CP-odd and CP-even states, respectively, complementing and substantially extending the reach of previous searches.eninfo:eu-repo/semantics/openAccessCMS2HDMArticle10.1016/j.physletb.2025.139568