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dc.creatorKhachatryan, V.
dc.creatorAdžić, Petar
dc.creatorEkmedzic, M.
dc.creatorMilošević, Jovan
dc.creatorRekovic, V.
dc.creatorĐorđević, Miloš
dc.creatorMilenović, Predrag
dc.date.accessioned2018-03-01T16:46:19Z
dc.date.available2018-03-01T16:46:19Z
dc.date.issued2016
dc.identifier.issn1029-8479
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/988
dc.description.abstractA search for compositeness of electrons and muons is presented using a data sample of proton-proton collisions at a center-of-mass energy of root s = 8TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 19.7 fb(-1). Excited leptons (l*) produced via contact interactions in conjunction with a standard model lepton are considered, and a search is made for their gauge decay modes. The decays considered are l* - GT l gamma and l* - GT lZ , which give final states of two leptons and a photon or, depending on the Z-boson decay mode, four leptons or two leptons and two jets. The number of events observed in data is consistent with the standard model prediction. Exclusion limits are set on the excited lepton mass, and the compositeness scale Lambda. For the case M-l* = Lambda the existence of excited electrons (muons) is excluded up to masses of 2.45 (2.47) TeV at 95% confidence level. Neutral current decays of excited leptons are considered for the first time, and limits are extended to include the possibility that the weight factors f and f, which determine the couplings between standard model leptons and excited leptons via gauge mediated interactions, have opposite sign.en
dc.relationAustrian Federal Ministry of Science, Research and Economy, Austrian Science Fund, Belgian Fonds de la Recherche Scientifique, 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, 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, Estonia, Estonian Research Council, Estonia [IUT23-4, IUT23-6], European Regional Development Fund, Estonia, Academy of Finland, 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 (Malaysia), 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, 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, Ukraine, State Fund for Fundamental Researches, Ukraine, Science and Technology Facilities Council, U.K., US Department of Energy, US National Science Foundation, Marie-Curie programme (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 programme of the Foundation for Polish Science, European Union, Regional Development Fund, OPUS programme of the National Science Center (Poland), Compagnia di San Paolo (Torino), Consorzio per la Fisica (Trieste), MIUR project (Italy) [20108T4XTM], Thalis programme - EU-ESF, Aristeia programme - EU-ESF, Greek NSRF, National Priorities Research Program by Qatar National Research Fund, Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand), Welch Foundation [C-1845], Institute for the Promotion of Teaching Science and Technology of Thailand, Finnish Ministry of Education and Culture, Ministry of Science and Technology
dc.rightsopenAccessen
dc.sourceJournal of High Energy Physicsen
dc.subjectBeyond Standard Modelen
dc.subjectExoticsen
dc.subjectHadron-Hadron scatteringen
dc.titleSearch for excited leptons in proton-proton collisions at root s=8 TeVen
dc.typearticleen
dcterms.abstractРековиц, В.; Милошевић Јован; Aдзиц, П.; Ђорђевић Милош; Екмедзиц, М.; Миленовић Предраг; Кхацхатрyан, В.;
dc.citation.issue3
dc.identifier.wos000373107900001
dc.identifier.doi10.1007/JHEP03(2016)125
dc.citation.otherArticle Number: 125
dc.citation.rankM21
dc.contributor.countCMS Collaboration (ukupan broj autora: 2307)
dc.identifier.scopus2-s2.0-84962292084
dc.identifier.fulltexthttp://vinar.vin.bg.ac.rs//bitstream/id/14361/984.pdf


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