Measurement of the t(t)over-bar production cross section in pp collisions at root s=7 TeV using the kinematic properties of events with leptons and jets
CMS Collaboration (ukupan broj autora: 2192)
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A measurement of the t (t) over bar production cross section in proton-proton collisions at a centre-of-mass energy of 7 TeV has been performed at the LHC with the CMS detector. The analysis uses a data sample corresponding to an integrated luminosity of 36 pb(-1) and is based on the reconstruction of the final state with one isolated, high transverse-momentum electron or muon and three or more hadronic jets. The kinematic properties of the events are used to separate the t (t) over bar signal from W+jets and QCD multijet background events. The measured cross section is 173(-32)(+39) (stat. + syst.) pb, consistent with standard model expectations.
Source:European Physical Journal C. Particles and Fields, 2011, 71, 9
- CNPq, CAPES, FAPERJ, FAPESP, Bulgarian Ministry of Education and Science, Chinese Academy of Sciences, Ministry of Science and Technology, National Natural Science Foundation of China, Colombian Funding Agency (COLCIENCIAS), Croatian Ministry of Science, Education and Sport, Research Promotion Foundation, Cyprus, Estonian Academy of Sciences and NICPB, Academy of Finland, Finnish Ministry of Education, and Helsinki Institute of Physics, Institut National de Physique Nucleaire et de Physique des Particules/CNRS, Commissariat a lEnergie Atomique et aux Energies Alternatives/CEA, France, Bundesministerium fur Bildung und Forschung, Deutsche Forschungsgemeinschaft, Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany, General Secretariat for Research and Technology, Greece, National Scientific Research Foundation, National Office for Research and Technology, Hungary, Department of Atomic Energy, and Department of Science and Technology, India, Institute for Studies in Theoretical Physics and Mathematics, Iran, Science Foundation, Ireland, Istituto Nazionale di Fisica Nucleare, Italy, Korean Ministry of Education, Science and Technology, NRF, Korea, Lithuanian Academy of Sciences, CINVESTAV, CONACYT, SEP, UASLP-FAI, Pakistan Atomic Energy Commission, State Commission for Scientific Research, Poland, Fundacao para a Ciencia e a Tecnologia, Portugal, JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan), Ministry of Science and Technologies of the Russian Federation, Russian Ministry of Atomic Energy, Ministry of Science and Technological Development of Serbia, Ministerio de Ciencia e Innovacion, Programa Consolider-Ingenio 2010, Spain, ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, SER, National Science Council, Taipei, Scientific and Technical Research Council of Turkey, Turkish Atomic Energy Authority, Science and Technology Facilities Council, UK, US Department of Energy, US National Science Foundation, Marie-Curie programme, European Research Council (European Union), Leventis Foundation, A.P. Sloan Foundation, Alexander von Humboldt Foundation, Associazione per lo Sviluppo Scientifico e Tecnologico del Piemonte (Italy), Belgian Federal Science Policy Office, Fonds pour la Formation a la Recherche dans lIndustrie et dans lAgriculture (FRIA-Belgium), Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)