| dc.contributor.author | Khachatryan, V. | |
| dc.contributor.author | Sirunyan, A. M. | |
| dc.contributor.author | Tumasyan, A. | |
| dc.contributor.author | Adam, W. | |
| dc.contributor.author | Bergauer, T. | |
| dc.contributor.author | Dragicevic, M. | |
| dc.contributor.author | Collaboration | |
| dc.date.accessioned | 2019-10-20T09:31:03Z | |
| dc.date.available | 2019-10-20T09:31:03Z | |
| dc.date.issued | 2015 | |
| dc.identifier.issn | 0370-2693 | |
| dc.identifier.uri | https://dx.doi.org/10.1016/j.physletb.2015.06.070 | |
| dc.identifier.uri | https://hdl.handle.net/11421/17572 | |
| dc.description.abstract | A search is performed for heavy Majorana neutrinos (N) using an event signature defined by two muons of the same charge and two jets (?±?±jj). The data correspond to an integrated luminosity of 19.7 fb-1 of proton-proton collisions at a center-of-mass energy of 8 TeV, collected with the CMS detector at the CERN LHC. No excess of events is observed beyond the expected standard model background and upper limits are set on |V?N|2 as a function of Majorana neutrino mass mN for masses in the range of 40-500 GeV, where V?N is the mixing element of the heavy neutrino with the standard model muon neutrino. The limits obtained are |V?N|2>0.00470 for mN=90 GeV, |V?N|2>0.0123 for mN=200 GeV, and |V?N|2>0.583 for mN=500 GeV. These results extend considerably the regions excluded by previous direct searches | en_US |
| dc.description.sponsorship | 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 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 Korea Research Council for Industrial Science and Technology Compagnia di San Paolo California Department of Fish and Game National Research Foundation Secretaría de Estado de Investigación, Desarrollo e Innovación Qatar National Research Fund Ministry of Science ICT and Future Planning Canadian Mathematical Society A.G. Leventis Foundation U.S. Department of Energy 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 ?????????? ???? ??????????????? ???????????? (????) Belgian Federal Science Policy Office Agentschap voor Innovatie door Wetenschap en Technologie Canadian Anesthesiologists' Society Alexander von Humboldt-Stiftung Departamento Administrativo de Ciencia, Tecnología e Innovación European Commission Ministerstvo Školství, Mláde?e a T?lov?chovy 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 European Research Council Fonds Wetenschappelijk Onderzoek Santa Fe Institute Ministry of Education and Science Louisiana Academy of Sciences | en_US |
| dc.description.sponsorship | We would like to thank Juan Antonio Aguliar-Saavedra, Francisco del Aguila, and Tao Han for assistance with Monte Carlo generators and calculations of the heavy neutrino branching fractions, as well as for advice on the theoretical interpretations of our results. 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); TUBITAK 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 Science 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. | en_US |
| dc.language.iso | eng | en_US |
| dc.publisher | Elsevier B.V. | en_US |
| dc.relation.isversionof | 10.1016/j.physletb.2015.06.070 | en_US |
| dc.rights | info:eu-repo/semantics/openAccess | en_US |
| dc.subject | CMS; Heavy neutrino; Physics | en_US |
| dc.title | Search for heavy Majorana neutrinos in ?±?± + jets events in proton-proton collisions at s=8 TeV | en_US |
| dc.type | article | en_US |
| dc.relation.journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | en_US |
| dc.contributor.department | Anadolu Üniversitesi, Fen Fakültesi, Fizik Bölümü | en_US |
| dc.identifier.volume | 748 | en_US |
| dc.identifier.startpage | 144 | en_US |
| dc.identifier.endpage | 166 | en_US |
| dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
