Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector
MetadataShow full item record
SupersymmetryHadron-Hadron scatteringHiggs PhysicsDark matter
Aad, G., Abbott, B., Abdallah, J. et al. Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector. J. High Energ. Phys. 2015, 206 (2015). [https://doi.org/10.1007/JHEP11(2015)206]
SponsorshipANPCyT; YerPhI, Armenia; Australian Research Council; BMWFW, Austria; Austrian Science Fund (FWF); Azerbaijan National Academy of Sciences (ANAS); SSTC, Belarus; National Council for Scientific and Technological Development (CNPq); Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); Natural Sciences and Engineering Research Council of Canada; NRC, Canada; Canada Foundation for Innovation; CERN; Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT); Chinese Academy of Sciences; Ministry of Science and Technology, China; National Natural Science Foundation of China; Departamento Administrativo de Ciencia, Tecnologia e Innovacion Colciencias; Ministry of Education, Youth & Sports - Czech Republic Czech Republic Government; DNRF, Denmark; Danish Natural Science Research Council; Lundbeckfonden; Centre National de la Recherche Scientifique (CNRS); CEA-DSM/IRFU, France; GNSF, Georgia; Federal Ministry of Education & Research (BMBF); HGF, Germany; Max Planck Society; Greek Ministry of Development-GSRT; RGC, China; Hong Kong SAR, China; Israel Science Foundation; I-CORE, Israel; Benoziyo Center, Israel; Istituto Nazionale di Fisica Nucleare (INFN); Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) Japan Society for the Promotion of Science; CNRST, Morocco; FOM (The Netherlands) Netherlands Government; Netherlands Organization for Scientific Research (NWO) Netherlands Government; RCN, Norway; Ministry of Science and Higher Education, Poland; NCN, Poland; Portuguese Foundation for Science and Technology; MNE/IFA, Romania; Russian Federation; NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; Slovenian Research Agency - Slovenia; MIZS, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC, Sweden; Wallenberg Foundation, Sweden; SERI, Switzerland; Canton of Bern, Switzerland; Canton of Geneva, Switzerland; Ministry of Science and Technology, Taiwan; Ministry of Energy & Natural Resources - Turkey; United States Department of Energy (DOE); National Science Foundation (NSF); BCKDF, Canada; Canada Council, Canada; CANARIE, Canada; CRC, Canada; Compute Canada, Canada; FQRNT; Ontario Innovation Trust, Canada; EPLANET; European Research Council (ERC); FP7; Horizon 2020 and Marie Sklodowska-Curie Actions; European Union (EU); French National Research Agency (ANR); Region Auvergne-Rhone-Alpes; Fondation Partager le Savoir, France; German Research Foundation (DFG); Alexander von Humboldt Foundation; Herakleitos; Thales; Aristeia programmes; Greek NSRF, Israel; US-Israel Binational Science Foundation; German-Israeli Foundation for Scientific Research and Development; Minerva, Israel; BRF, Norway; Royal Society of London; Leverhulme Trust; ICREA; Science & Technology Facilities Council (STFC) ST/I005803/1 ST/L000970/1 ATLAS Upgrade ST/M001407/1 PP/E000444/1 ST/H00100X/2 ST/K001310/1 ST/J004928/1 ATLAS Upgrade 1575161 1366364 ST/K001361/1 MINOS/MINOS+ ST/K001361/1 ST/G50228X/1 PP/D002915/1 GRIDPP PP/E003087/1 ST/L001179/1 1366825 ST/K001329/1 ST/L000970/1 ST/L001195/1 ST/L006464/1 ST/J00474X/1 ATLAS Upgrades ST/J005576/1 ST/L003325/1 ST/K001361/1 ATLAS ST/K00073X/1 ST/K000705/1 ST/K003658/1 ST/M001504/1 ST/M006980/1 ST/K00137X/1 ST/K001361/1 LHCb Upgrades ST/I006056/1 1072662 1082012 ST/I000186/1 ST/L000970/1 ATLAS Upgrades ST/H001093/2 1521422 ST/H00100X/1 ST/J004928/1 ATLAS Upgrades ST/J004944/1 ST/L001209/1 ATLAS Upgrades ST/K00140X/1 ST/K001361/1 ATLAS Upgrades ST/K001310/1 ATLAS Upgrades ST/N000307/1 ST/M004821/1 GRIDPP ST/M002306/1 PP/E002846/1 ST/L001179/1 ATLAS Upgrade ST/L000326/1 ST/K001310/1 LHCb ST/I00372X/1 GRIDPP ST/K001310/1 LHCb Upgrades ST/L001144/1 ST/L001179/1 ATLAS Upgrades ST/M001431/1 ST/L006480/1 ST/M001474/1 ST/K001396/1 ATLAS ST/K001361/1 LHCb ST/H001093/1 ST/G502320/1 ST/L00352X/1 ST/L003414/1 ST/K001248/1 1201187 ST/M001733/1 ST/K003658/1 GRIDPP ST/K001302/1 ST/J004928/1 ST/J00474X/1 ST/K001418/1 ST/I006080/1 ST/I006056/1 ATLAS Upgrade ST/I005803/1 GRIDPP ST/I006056/1 ATLAS Upgrades ST/J005487/1 ATLAS ST/L003112/1 ST/M002071/1 ATLAS Upgrades ST/K001310/1 ATLAS ST/M000761/1 ST/K001426/1 ATLAS ST/I00372X/1 ST/M003213/1 ST/M004821/1 ST/M007103/1 ATLAS Upgrades ST/K001264/1 ATLAS ST/I000178/1 PP/E000355/1 1334588 ST/M002306/1 ATLAS Upgrades ST/M006980/1 ATLAS Upgrades PP/E000347/1 ST/N000463/1 ST/J005525/1
The ATLAS experiment at the LHC has measured the Higgs boson couplings and mass, and searched for invisible Higgs boson decays, using multiple production and decay channels with up to 4.7 fb−1 of pp collision data at s√=7 TeV and 20.3 fb−1 at s√=8 TeV. In the current study, the measured production and decay rates of the observed Higgs boson in the γγ, ZZ, W W , Zγ, bb, τ τ , and μμ decay channels, along with results from the associated production of a Higgs boson with a top-quark pair, are used to probe the scaling of the couplings with mass. Limits are set on parameters in extensions of the Standard Model including a composite Higgs boson, an additional electroweak singlet, and two-Higgs-doublet models. Together with the measured mass of the scalar Higgs boson in the γγ and ZZ decay modes, a lower limit is set on the pseudoscalar Higgs boson mass of m A > 370 GeV in the “hMSSM” simplified Minimal Supersymmetric Standard Model. Results from direct searches for heavy Higgs bosons are also interpreted in the hMSSM. Direct searches for invisible Higgs boson decays in the vector-boson fusion and associated production of a Higgs boson with W/Z (Z → ℓℓ, W/Z → jj) modes are statistically combined to set an upper limit on the Higgs boson invisible branching ratio of 0.25. The use of the measured visible decay rates in a more general coupling fit improves the upper limit to 0.23, constraining a Higgs portal model of dark matter.