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Journal of High Energy Physics


A search for charged Higgs bosons decaying into (WW +/-)-W-+/- or W(+/-)Z bosons is performed, involving experimental signatures with two leptons of the same charge, or three or four leptons with a variety of charge combinations, missing transverse momentum and jets. A data sample of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider between 2015 and 2018 is used. The data correspond to a total integrated luminosity of 139 fb(-1). The search is guided by a type-II seesaw model that extends the scalar sector of the Standard Model with a scalar triplet, leading to a phenomenology that includes doubly and singly charged Higgs bosons. Two scenarios are explored, corresponding to the pair production of doubly charged H-+/-+/- bosons, or the associated production of a doubly charged H-+/-+/- boson and a singly charged H-+/- boson. No significant deviations from the Standard Model predictions are observed. H-+/-+/- bosons are excluded at 95% confidence level up to 350 GeV and 230 GeV for the pair and associated production modes, respectively.




de Almeida, Fernando Marroquim Leao/0000-0003-2265-784X; Kuze, Masahiro/0000-0001-8858-8440; Ciesla, Krzysztof/0000-0003-2751-3474; Gladilin, Leonid K./0000-0001-9422-8636; Kostyukhin, Vadim/0000-0002-0490-9209; de Renstrom, Pawel Bruckman/0000-0002-0206-1160; Trzebinski, Maciej/0000-0002-5151-7101; AGHEORGHIESEI, Catalin/0000-0003-3695-1847; Billoud, Thomas/0000-0002-6280-3306; Schioppa, Enrico Junior/0000-0002-1369-9944; Ozcan, Veysi Erkcan/0000-0003-4643-6347; Kroll, Jiri/0000-0001-6215-3326; Tikhomirov, Vladimir/0000-0002-9634-0581; Bailey, Adam J/0000-0002-3301-2986; Chwastowski, Janusz J./0000-0002-6190-8376; Snesarev, Andrei/0000-0002-9067-8362; Lee, Shih-Chang/0000-0002-3353-2658; Sopczak, Andre/0000-0001-6981-0544; Grinstein, Sebastian/0000-0002-6460-8694; Alimonti, Gianluca/0000-0002-7128-9046; Llacer, Maria Moreno/0000-0003-1113-3645; Barreiro, Fernando/0000-0002-3021-0258; Vaniachine, Alexandre/0000-0002-0367-5666; Smirnova, Oxana G/0000-0003-2517-531X; Ohm, Christian/0000-0002-8015-7512; Camplani, Alessandra/0000-0002-6386-9788; Saoucha, Kamal/0000-0001-9150-640X; McKee, Shawn/0000-0002-4551-4502; Calafiura, Paolo/0000-0002-1692-1678; Konstantinidis, Nikolaos/0000-0002-4140-6360; Petersen, Troels/0000-0003-0221-3037; Butterworth, Jonathan/0000-0002-5905-5394





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