Search for electroweak production of charginos and neutralinos using leptonic final states in pp collisions at root s=7 TeV
Austrian Federal Ministry of Science and Research ; Fonds de la Recherche Scientifique (FNRS) ; Fonds voor Wetenschappelijk Onderzoek ; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) ; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) ; Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) ; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) ; Bulgarian Ministry of Education and Science ; Organisation Européenne pour la Recherche Nucléaire (CERN) ; Chinese Academy of Sciences (CAS) ; Ministry of Science and Technology ; National Natural Science Foundation of China (NSFC) ; Colombian Funding Agency (COLCIENCIAS) ; Croatian Ministry of Science, Education and Sport ; Research Promotion Foundation (RPF) ; Ministry of Education and Research ; European Regional Development Fund (ERDF) ; Academy of Finland ; Finnish Ministry of Education and Culture ; Helsinki Institute of Physics (HIP) ; Institut national de physique nucléaire et de physique des particules (IN2P3/CNRS) ; Commissariat à l'énergie atomique et aux énergies alternatives (CEA) ; Bundesministerium für Bildung und Forschung (BMBF) ; Deutsche Forschungsgemeinschaft (DFG) ; Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany ; General Secretariat for Research and Technology (GSRT) ; National Scientific Research Foundation ; National Office for Research and Technology, Hungary ; Department of Atomic Energy ; Department of Science and Technology (DST) - India ; Institute for Studies in Theoretical Physics and Mathematics, Iran ; Science Foundation Ireland (SFI) ; Istituto Nazionale di Fisica Nucleare (INFN) ; Korean Ministry of Education, Science and Technology ; National Research Foundation of Korea (NRF) ; Lithuanian Academy of Sciences ; Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV) ; Consejo Nacional de Ciencia y Tecnología (CONACYT) ; SEP ; UASLP-FAI ; Ministry of Science and Innovation, New Zealand ; Pakistan Atomic Energy Commission (PAEC) ; Ministry of Science and Higher Education ; National Science Centre, Poland ; Fundação para a Ciência e a Tecnologia (FCT) ; Joint Institute for Nuclear Research (JINR) ; Ministry of Education and Science of the Russian Federation ; Federal Agency of Atomic Energy of the Russian Federation ; Russian Academy of Sciences ; Russian Foundation for Basic Research (RFBR) ; Ministry of Science and Technological Development of Serbia ; Secretaria de Estado de Investigacion, Desarrollo e Innovacion, Spain ; Programa Consolider-Ingenio, Spain ; ETH Board ; ETH Zurich ; PSI ; SNF ; UniZH ; Canton Zurich ; SER ; National Science Council, Taipei ; Thailand Center of Excellence in Physics ; Institute for the Promotion of Teaching Science and Technology ; National Electronics and Computer Technology Center ; Scientific and Technical Research Council of Turkey ; Turkish Atomic Energy Authority ; Science and Technology Facilities Council (STFC) ; 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 ; Austrian Science Fund (FWF) ; Belgian Federal Science Policy Office ; Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium) ; Agentschap voor Innovatie door Wetenschap en Technologie (IWT) ; Ministry of Education, Youth and Sports (MEYS) of Czech Republic ; Council of Scientific and Industrial Research (CSIR) - India ; Compagnia di San Paolo (Torino) ; HOMING PLUS programme of Foundation for Polish Science ; European Union, Regional Development Fund ; MoER: SF0690030s09 ; The 2011 dataset of the CMS experiment, consisting of an integrated luminosity of 4.98 fb(-1) of pp collisions at root s = 7 TeV, enables expanded searches for direct electroweak pair production of charginos and neutralinos in supersymmetric models as well as their analogs in other models of new physics. Searches sensitive to such processes, with decays to final states that contain two or more leptons, are presented. Final states with three leptons, with a same-sign lepton pair, and with an opposite-sign lepton pair in conjunction with two jets, are examined. No excesses above the standard model expectations are observed. The results are used in conjunction with previous results on four-lepton final states to exclude a range of chargino and neutralino masses from approximately 200 to 500 GeV in the context of models that assume large branching fractions of charginos and neutralinos to leptons and vector bosons.