Search for single production of scalar leptoquarks in proton-proton collisions at root s=8 TeV
CMS Collaboration (ukupan broj autora: 2312)
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A search is presented for the production of both first- and second-generation scalar leptoquarks with a final state of either two electrons and one jet or two muons and one jet. The search is based on a data sample of proton-proton collisions at center-of-mass energy root s = 8 TeV recorded with the CMS detector and corresponding to an integrated luminosity of 19.6 fb(-1). Upper limits are set on both the first- and second-generation leptoquark production cross sections as functions of the leptoquark mass and the leptoquark couplings to a lepton and a quark. Results are compared with theoretical predictions to obtain lower limits on the leptoquark mass. At 95% confidence level, single production of first- generation leptoquarks with a coupling and branching fraction of 1.0 is excluded for masses below 1730 GeV, and second-generation leptoquarks with a coupling and branching fraction of 1.0 is excluded for masses below 530 GeV. These are the best overall limits on the production of firs...t-generation leptoquarks to date.
Извор:Physical Review D, 2016, 93, 3
- Austrian Federal Ministry of Science, Research and Economy, Austrian Science Fund, Belgian Fonds de la Recherche Scientifique, and Fonds voor Wetenschappelijk Onderzoek, Brazilian Funding Agency (CNPq), Brazilian Funding Agency (CAPES), Brazilian Funding Agency (FAPERJ), Brazilian Funding Agency (FAPESP), Bulgarian Ministry of Education and Science, CERN, 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, Croatian Science Foundation, Research Promotion Foundation, Cyprus, Ministry of Education and Research, Estonian Research Council [IUT23-4, IUT23-6], Brazilian Funding Agency (CNPq), Estonia, Brazilian Funding Agency (CAPES), Estonia, Brazilian Funding Agency (FAPERJ), Estonia, Brazilian Funding Agency (Regional Development Fund), Estonia, Academy of Finland, Finnish Ministry of Education and Culture, Ministry of Education and Research, Estonia, Estonian Research Council, Estonia [IUT23-4, IUT23-6], European Regional Development Fund, Estonia, Helsinki Institute of Physics, Institut National de Physique Nucleaire et de Physique des Particules/CNRS, France, Commissariat a lEnergie Atomique et aux Energies Alternatives/CEA, France, Bundesministerium fur Bildung und Forschung, Germany, Deutsche Forschungsgemeinschaft, Germany, Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany, General Secretariat for Research and Technology, Greece, National Scientific Research Foundation, Hungary, National Innovation Office, Hungary, Department of Atomic Energy, India, Department of Science and Technology, India, Institute for Studies in Theoretical Physics and Mathematics, Iran, Science Foundation, Ireland, Istituto Nazionale di Fisica Nucleare, Italy, Ministry of Science, ICT and Future Planning, Republic of Korea, National Research Foundation (NRF), Republic of Korea, Lithuanian Academy of Sciences, Ministry of Education, and University of Malaya (Malaysia), Mexican Funding Agency (CINVESTAV), Mexican Funding Agency (CONACYT), Mexican Funding Agency (SEP), Mexican Funding Agency (UASLP-FAI), Ministry of Business, Innovation and Employment, New Zealand, Pakistan Atomic Energy Commission, Ministry of Science and Higher Education, Poland, National Science Centre, Poland, Fundacao para a Ciencia e a Tecnologia, Portugal, JINR, Dubna, 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, Ministry of Education, Science and Technological Development of Serbia, Secretaria de Estado de Investigacion, Desarrollo e Innovacion and Programa Consolider-Ingenio, Spain, Swiss Funding Agency (ETH Board), Swiss Funding Agency (ETH Zurich), Swiss Funding Agency (PSI), Swiss Funding Agency (SNF), Swiss Funding Agency (UniZH), Swiss Funding Agency (Canton Zurich), Swiss Funding Agency (SER), Ministry of Science and Technology, Taipei, Thailand Center of Excellence in Physics, Institute for the Promotion of Teaching Science and Technology of Thailand, Special Task Force for Activating Research, National Science and Technology Development Agency of Thailand, Scientific and Technical Research Council of Turkey, Turkish Atomic Energy Authority, National Academy of Sciences of Ukraine, State Fund for Fundamental Researches, Ukraine, Science and Technology Facilities Council, UK, U.S. Department of Energy, U.S. National Science Foundation, Marie Curie program (European Union), European Research Council (European Union), EPLANET (European Union), Leventis Foundation, A.P. Sloan Foundation, Alexander von Humboldt Foundation, 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), Ministry of Education, Youth and Sports (MEYS) of the Czech Republic, Council of Science and Industrial Research, India, HOMING PLUS program of the Foundation for Polish Science, European Union, Regional Development Fund, OPUS program of the National Science Center (Poland), Compagnia di San Paolo (Torino), Consorzioper la Fisica (Trieste), MIUR Project (Italy) [20108T4XTM], Thalis program - EU-ESF, Aristeia program - EU-ESF, Greek NSRF, National Priorities Research Program by Qatar National Research Fund, RachadapisekSompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand), Welch Foundation [C-1845]
ISSN: 2470-0010 (print); 2470-0029 (electronic)