Search for the Standard Model Higgs Boson in the Diphoton Decay Channel with 4.9 fb−1 of pp Collision Data at √s=7 TeV with ATLAS
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American Physical Society
Aad, G., Abbott, B., Abdallah, J., Khalek, S. A., Abdelalim, A. A., Abdesselam, A., ... & Abreu, H. (2012). Search for the Standard Model Higgs Boson in the Diphoton Decay Channel with 4.9 fb− 1 of p p Collision Data at s= 7 TeV with ATLAS. Physical review letters, 108(11), 111803. [https://doi.org/10.1103/PhysRevLett.108.111803]
SponsorshipANPCyT; YerPhI, 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); 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; MES of Russia; ROSATOM; 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); Cantons of Bern, Switzerland; National Science Council of Taiwan; Ministry of Energy & Natural Resources - Turkey; Royal Society of London; Leverhulme Trust; United States Department of Energy (DOE); National Science Foundation (NSF); Cantons of Geneva, Switzerland; Russian Federation; ICREA; Science & Technology Facilities Council (STFC) ST/K001361/1 LHCb Upgrades ST/I003525/1 PP/E003699/2 ST/K001361/1 ST/I005803/1 GRIDPP ST/K001337/1 ST/K001361/1 LHCb ST/F007337/1 ST/I003142/1 ST/H001069/2 ST/K001248/1 ATLAS PP/E003087/1 ST/I000186/1 ST/M001431/1 ST/M001474/1 ST/H001093/2 ST/K00073X/1 ST/J004928/1 ST/L001144/1 ST/K001248/1 ST/I005803/1 ST/L000970/1 GRIDPP ST/K001418/1 ST/K003658/1 GRIDPP PP/E003699/1 ST/K001361/1 ATLAS ST/L000970/1 ATLAS Upgrade ST/K001361/1 ATLAS Upgrades ST/K001361/1 MINOS/MINOS+ ST/H001026/1 ST/G502320/1 ST/H001093/1 ST/I006080/1 ST/K001264/1 ATLAS ST/J004928/1 ATLAS Upgrade ST/J004944/1 ST/J005576/1 ST/K003658/1 ST/L001004/1 ST/K001329/1 ATLAS ST/I003517/1 ATLAS PP/E000347/1 ST/K001337/1 ATLAS ST/J002798/1 ST/H001026/2
A search for the standard model Higgs boson is performed in the diphoton decay channel. The data used correspond to an integrated luminosity of 4.9 fb−1 collected with the ATLAS detector at the Large Hadron Collider in proton-proton collisions at a center-of-mass energy of √s=7 TeV. In the diphoton mass range 110–150 GeV, the largest excess with respect to the background-only hypothesis is observed at 126.5 GeV, with a local significance of 2.8 standard deviations. Taking the look-elsewhere effect into account in the range 110–150 GeV, this significance becomes 1.5 standard deviations. The standard model Higgs boson is excluded at 95% confidence level in the mass ranges of 113–115 GeV and 134.5–136 GeV.