Aad, G.Aakvaag, E.Abbott, B.Abdelhameed, S.Abeling, K.Abicht, N. J.Zhao, Z.2025-02-102025-02-1020250370-26931873-2445https://doi.org/10.1016/j.physletb.2025.139277Mckee, Shawn/0000-0002-4551-4502; Filthaut, Frank/0000-0003-3338-2247; Alvarez Fernandez, Adrian/0000-0003-1525-4620; Keaveney, James/0000-0003-0766-5307; Franklin, Melissa/0000-0002-6595-883X; Chapon, Emilien/0000-0001-6968-9828; Yang, Siqi/0000-0002-0204-984X; Alderweireldt, Sara/0000-0002-8224-7036; Snyder, Scott/0000-0001-8610-8423; Kourlitis, Vangelis/0000-0001-6568-2047; Bortoletto, Daniela/0000-0002-1287-4712; Wu, Xin/0000-0001-7655-389X; Dong, Qichen/0000-0002-0117-7831; Burdin, Sergey/0000-0003-4831-4132; Mondal, Santu/0000-0002-6965-7380; Cepaitis, Vilius/0000-0002-4809-4056; Worm, Steven/0000-0002-3865-4996; Zhang, Zhicai/0000-0002-1630-0986; Sato, Koji/0000-0001-8988-4065; Leblanc, Matt/0000-0001-5977-6418; Khwaira, Yahya/0000-0001-8538-1647; Escobar Ibanez, Carlos/0000-0003-4442-4537; Zenz, Seth/0000-0002-9720-1794; Cadamuro, Luca/0000-0001-8789-610X; Shah, Aashaq/0000-0002-6157-2016; Haley, Joseph/0000-0002-6938-7405; Cerri, Alessandro/0000-0002-1904-6661; Gonski, Julia/0000-0003-2037-6315; Mcgovern, Robert/0000-0001-9139-6896; Yorita, Kohei/0000-0003-1988-8401; Sciandra, Andrea/0000-0001-7163-501X; Robson, Aidan/0000-0002-1659-8284; Shabalina, Elizaveta/0000-0003-4849-556X; Camarda, Stefano/0000-0003-0479-7689; Saibel, Andrej/0000-0002-9932-7622; Panwar, Lata/0000-0003-2461-4907; Vormwald, Benedikt/0000-0003-2607-7287; Islam, Wasikul/0000-0002-5624-5934; Munoz Sanchez, Francisca/0000-0002-6374-458X; Tishelman-Charny, Abraham/0000-0002-7332-5098; De Almeida Dias, Flavia/0000-0001-6882-5402; Stupak Iii, John/0000-0001-9610-0783; Haas, Andrew/0000-0002-4832-0455; Pianori, Elisabetta/0000-0001-9233-5892; Li, Liang/0000-0001-6411-6107; Lister, Alison/0000-0002-1552-3651; Qian, Jianming/0000-0003-4813-8167; Thomson, Evelyn/0000-0001-6031-2768; Gonzalez Suarez, Rebeca/0000-0002-6126-7230; Grivaz, Jean-Francois/0000-0003-4793-7995; Hays, Chris/0000-0003-2371-9723; Deliot, Frederic/0000-0003-0777-6031; Farrington, Sinead/0000-0001-5350-9271; Fox, Harald/0000-0003-3089-6090; Brandt, Oleg/0000-0001-5219-1417; Romain, Madar/0000-0002-6875-6408; Hopkins, Walter/0000-0001-7814-8740; Lopez Solis, Alvaro/0000-0002-0511-4766; Duperrin, Arnaud/0000-0002-5789-9825; Grinstein, Sebastian/0000-0002-6460-8694; Tu, Yanjun/0000-0002-5865-183X; Introzzi, Gianluca/0000-0002-1314-2580This Letter presents a constraint on the total width of the Higgs boson (Gamma(H)) using a combined measurement of on-shell Higgs boson production and the production of four top quarks, which involves contributions from off-shell Higgs boson-mediated processes. This method relies on the assumption that the tree-level Higgs-top Yukawa coupling strength is the same for on-shell and off-shell Higgs boson production processes, thereby avoiding any assumptions about the relationship between on-shell and off-shell gluon fusion Higgs production rates, which were central to previous measurements. The result is based on up to 140 fb(-1) of proton-proton collisions at a centre-of-mass energy of root s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on Gamma(H) is 450 MeV (75 MeV). Additionally, considering the constraint on the Higgs-top Yukawa coupling from loop-induced Higgs boson production and decay processes further yields an observed (expected) upper limit of 160 MeV (55 MeV).eninfo:eu-repo/semantics/closedAccessArticle2-s2.0-8521592515910.1016/j.physletb.2025.139277