Search for pair-produced resonances decaying to jet pairs in proton–proton collisions at s=8 TeV

Abstract

Results are reported of a general search for pair production of heavy resonances decaying to pairs of hadronic jets in events with at least four jets. The study is based on up to 19.4 fb?1 of integrated luminosity from proton–proton collisions at a center-of-mass energy of 8 TeV, recorded with the CMS detector at the LHC. Limits are determined on the production of scalar top quarks (top squarks) in the framework of R-parity violating supersymmetry and on the production of color-octet vector bosons (colorons). First limits at the LHC are placed on top squark production for two scenarios. The first assumes decay to a bottom quark and a light-flavor quark and is excluded for masses between 200 and 385 GeV, and the second assumes decay to a pair of light-flavor quarks and is excluded for masses between 200 and 350 GeV at 95% confidence level. Previous limits on colorons decaying to light-flavor quarks are extended to exclude masses from 200 to 835 GeV ; California Earthquake Authority Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture European Regional Development Fund State Fund for Fundamental Research of Ukraine: Ukraine Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro CS Fund: Croatia Fuel Cell Technologies Program Bangladesh Council of Scientific and Industrial Research Joint Institute for Nuclear Research Ministry of Education - Singapore Pakistan Atomic Energy Commission: Pakistan Consejo Nacional de Ciencia y Tecnología Ministry for Business Innovation and Employment National Science and Technology Development Agency: Thailand Institute for Research in Fundamental Sciences Ministry of Science and Technology Foundation for Promotion of Material Science and Technology of Japan: Taipei Hispanics in Philanthropy California Department of Fish and Game Compagnia di San Paolo Qatar National Research Fund National Research Foundation Secretaría de Estado de Investigación, Desarrollo e Innovación Ministry of Science ICT and Future Planning Canadian Mathematical Society A.G. Leventis Foundation U.S. Department of Energy Türkiye Bilimsel ve Teknolojik Araştirma Kurumu Academy of Finland Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Türkiye Atom Enerjisi Kurumu Ministerio de Educación y Cultura Research Promotion Foundation: Cyprus National Science Foundation Science and Technology Facilities Council Human Growth Foundation Austrian Science Fund Fundação de Amparo à Pesquisa do Estado de São Paulo Secretaría de Educación Pública Bundesministerium für Wissenschaft, Forschung und Wirtschaft Fonds De La Recherche Scientifique - FNRS National Academy of Sciences of Ukraine Bundesministerium für Bildung und Forschung National Natural Science Foundation of China Instituto Nazionale di Fisica Nucleare Hungarian Scientific Research Fund Department of Atomic Energy, Government of India Universidade de Macau Rochester Academy of Science Department of Science and Technology, Government of Rajasthan Conselho Nacional de Desenvolvimento Científico e Tecnológico ?????????? ???? ??????????????? ???????????? (????) Canadian Anesthesiologists' Society Agentschap voor Innovatie door Wetenschap en Technologie Belgian Federal Science Policy Office Departamento Administrativo de Ciencia, Tecnología e Innovación Alexander von Humboldt-Stiftung Ministerstvo Školství, Mláde?e a T?lov?chovy European Commission National Institutes of Health: Hungary CERN Ministerstvo Školství, Mláde?e a T?lov?chovy European Regional Development Fund Ministero dell'Istruzione, dell'Università e della Ricerca: 20108T4XTM Serbia NSC General Secretariat for Research and Technology Fonds Wetenschappelijk Onderzoek European Research Council Santa Fe Institute Ministry of Education and Science Louisiana Academy of Sciences A.P. Giannini Foundation ; We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq , CAPES , FAPERJ , and FAPESP (Brazil); MES (Bulgaria); CERN ; CAS , MOST , and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); MoER , ERC IUT and ERDF (Estonia); Academy of Finland , MEC , and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF , DFG , and HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); CINVESTAV , CONACYT , SEP , and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON , RosAtom , RAS and RFBR (Russia); MESTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter , IPST , STAR and NSTDA (Thailand); TÜBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie program and the European Research Council and EPLANET (European Union); the Leventis Foundation ; the A.P. Sloan Foundation ; the Alexander von Humboldt Foundation ; the Belgian Federal Science Policy Office ; the Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Council of Scientific and Industrial Research , India; the HOMING PLUS program of Foundation For Polish Science , cofinanced from European Union, Regional Development Fund ; the Compagnia di San Paolo (Torino); the Consorzio per la Fisica (Trieste); MIUR project 20108T4XTM (Italy); the Thalis and Aristeia programs cofinanced by EU-ESF and the Greek NSRF ; and the National Priorities Research Program by Qatar National Research Fund .