Combined search for the Standard Model Higgs boson using up to 4.9 fb−1 of pp collision data at √s = 7 TeV with the ATLAS detector at the LHC
Metadatos
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Elsevier
Fecha
2012-03-29Referencia bibliográfica
Aad, G., Abbott, B., Abdallah, J., Khalek, S. A., Abdelalim, A. A., Abdesselam, A., ... & Abreu, H. (2012). Combined search for the Standard Model Higgs boson using up to 4.9 fb− 1 of pp collision data at s= 7TeV with the ATLAS detector at the LHC. Physics Letters B, 710(1), 49-66 [https://doi.org/10.1016/j.physletb.2012.02.044]
Patrocinador
ANPCyT; YerPhl, Armenia; Australian Research Council; BMWF, Austria; 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; European Union (EU); European Union (EU) European Research Council (ERC); Centre National de la Recherche Scientifique (CNRS); CEA-DSM/IRFU, France; GNAS, Georgia; Federal Ministry of Education & Research (BMBF); German Research Foundation (DFG); HGF, Germany; Max Planck Society; Alexander von Humboldt Foundation; Greek Ministry of Development-GSRT; Israel Science Foundation; MINERVA, Israel; German-Israeli Foundation for Scientific Research and Development; DIP, 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; GRICES, Portugal; Portuguese Foundation for Science and Technology; MERYS (MECTS), Romania; Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; Slovenian Research Agency - Slovenia; MVZT, Slovenia; DST/NRF, South Africa; Spanish Government; SRC, Sweden; Wallenberg Foundation, Sweden; SER, Switzerland; Swiss National Science Foundation (SNSF); Canton of Bern, Switzerland; Canton of Geneva, Switzerland; National Science Council of Taiwan; Ministry of Energy & Natural Resources - Turkey; Leverhulme Trust; United States Department of Energy (DOE); National Science Foundation (NSF); Royal Society of London; Science & Technology Facilities Council (STFC) PP/E000347/1 ST/H001093/1 ST/H001026/2 ST/H00100X/2 ST/I000186/1 ST/K001361/1 MINOS/MINOS+ ST/K001361/1 ATLAS Upgrades ST/K003658/1 ST/L001004/1 ST/I006080/1 ST/I003142/1 ST/H001026/1 ST/M001474/1 ST/K001248/1 ATLAS ST/K001310/1 LHCb Upgrades ST/K001310/1 ATLAS Upgrades ST/I003525/1 ST/K001361/1 LHCb Upgrades ST/F007337/1 PP/E003699/2 ST/K00073X/1 ST/K001310/1 LHCb ST/K001337/1 ST/K000705/1 ST/J004928/1 ST/I005803/1 ST/I003517/1 PP/E003699/1 ST/K001310/1 ST/K001361/1 ATLAS ST/H00100X/1 ST/J005576/1 ST/K003658/1 GRIDPP PP/E003087/1 ST/L000970/1 ATLAS Upgrade ST/L001195/1 ST/K001264/1 ATLAS ST/K001361/1 ATLAS ST/L000970/1 ST/K001337/1 ATLAS ST/J002798/1 ST/H001093/2 GRIDPP PP/E000355/1 ST/I005803/1 GRIDPP ST/L001144/1 ST/H001069/2 ST/K001418/1 ST/K001329/1 ATLAS ST/J004944/1 ST/G502320/1 ST/J004928/1 ATLAS Upgrade ST/K001310/1 ATLAS ST/K001361/1 LHCb ST/K001248/1 ST/M001431/1; ICREAResumen
A combined search for the Standard Model Higgs boson with the ATLAS experiment at the LHC using datasets corresponding to integrated luminosities from 1.04 fb-1 to 4.9 fb-1 of pp collisions collected at s=7TeV is presented. The Higgs boson mass ranges 112.9-115.5 GeV, 131-238 GeV and 251-466 GeV are excluded at the 95% confidence level (CL), while the range 124-519 GeV is expected to be excluded in the absence of a signal. An excess of events is observed around mH~126GeV with a local significance of 3.5 standard deviations (σ). The local significances of H→γγ, H→ZZ(z.ast;)→ℓ+ℓ-ℓ'+ℓ'- and H→WW(z.ast;)→ℓ+νℓ'-ν- the three most sensitive channels in this mass range, are 2.8σ, 2.1σ and 1.4σ, respectively. The global probability for the background to produce such a fluctuation anywhere in the explored Higgs boson mass range 110-600 GeV is estimated to be ~1.4% or, equivalently, 2.2σ