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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/129577
Title: 
Search for physics beyond the standard model in dilepton mass spectra in proton-proton collisions at root s=8 TeV
Author(s): 
Institution: 
  • Yerevan Phys Inst
  • OeAW
  • Natl Ctr Particle & High Energy Phys
  • Univ Antwerp
  • Vrije Univ Brussel
  • Univ Libre Bruxelles
  • Univ Ghent
  • Catholic Univ Louvain
  • Univ Mons
  • Ctr Brasileiro Pesquisas Fis
  • Universidade do Estado do Rio de Janeiro (UERJ)
  • Universidade Estadual Paulista (UNESP)
  • Universidade Federal do ABC (UFABC)
  • Inst Nucl Energy Res
  • Univ Sofia
  • Inst High Energy Phys
  • Peking Univ
  • Univ Los Andes
  • Univ Split
  • Rudjer Boskovic Inst
  • Univ Cyprus
  • Charles Univ Prague
  • Acad Sci Res &Technol Arab Republ Egypt
  • NICPB
  • Univ Helsinki
  • Helsinki Inst Phys
  • Lappeenranta Univ Technol
  • CEA Saclay
  • Ecole Polytech
  • Univ Strasbourg
  • CNRS
  • Univ Lyon 1
  • Tbilisi State Univ
  • Rhein Westfal TH Aachen
  • DESY
  • Univ Hamburg
  • Univ Karlsruhe
  • NCSR Demokritos
  • Univ Athens
  • Univ Ioannina
  • Wigner Res Ctr Phys
  • Inst Nucl Res ATOMKI
  • Debrecen Univ Med
  • Natl Inst Sci Educ & Res
  • Panjab Univ
  • Univ Delhi
  • Saha Inst Nucl Phys
  • Bhabha Atom Res Ctr
  • Tata Inst Fundamental Res
  • Inst Res Fundamental Sci IPM
  • Univ Coll Dublin
  • Ist Nazl Fis Nucl
  • Univ Bari
  • Politecn Bari
  • Univ Bologna
  • Univ Catania
  • CSFNSM
  • Univ Florence
  • Univ Genoa
  • Univ Milano Bicocca
  • Univ Naples Federico II
  • Univ Basilicata Potenza
  • Univ G Marconi Roma
  • Univ Padua
  • Univ Trento
  • Univ Pavia
  • Univ Perugia
  • Univ Pisa
  • Scuola Normale Super Pisa
  • Univ Rome
  • Univ Turin
  • Univ Piemonte Orientale Novara
  • Univ Trieste
  • Kangwon Natl Univ
  • Kyungpook Natl Univ
  • Chonbuk Natl Univ
  • Chonnam Natl Univ
  • Korea Univ
  • Seoul Natl Univ
  • Univ Seoul
  • Sungkyunkwan Univ
  • Vilnius State Univ
  • Univ Malaya
  • IPN
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  • Benemerita Univ Autonoma Puebla
  • Univ Autonoma San Luis Potosi
  • Univ Auckland
  • Univ Canterbury
  • Quaid I Azam Univ
  • Natl Ctr Nucl Res
  • Univ Warsaw
  • Lab Instrumentacao & Fis Expt Particulas
  • Joint Inst Nucl Res
  • Petersburg Nucl Phys Inst
  • Russian Acad Sci
  • Inst Theoret & Expt Phys
  • PN Lebedev Phys Inst
  • Moscow MV Lomonosov State Univ
  • State Res Ctr Russian Federat
  • Univ Belgrade
  • CIEMAT
  • Univ Autonoma Madrid
  • Univ Oviedo
  • Univ Cantabria
  • CERN
  • Paul Scherrer Inst
  • Swiss Fed Inst Technol
  • Univ Zurich
  • Natl Cent Univ
  • Natl Taiwan Univ
  • Chulalongkorn Univ
  • Cukurova Univ
  • Middle E Tech Univ
  • Bogazici Univ
  • Istanbul Tech Univ
  • Ctr Nat Sci
  • Univ Bristol
  • Rutherford Appleton Lab
  • Univ London Imperial Coll Sci Technol &Med
  • Brunel Univ
  • Baylor Univ
  • Univ Alabama
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  • CALTECH
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  • Univ Colorado
  • Cornell Univ
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  • Fermilab Natl Accelerator Lab
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  • Florida Int Univ
  • Florida State Univ
  • Florida Inst Technol
  • Univ Illinois
  • Univ Iowa
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  • Univ Kansas
  • Kansas State Univ
  • Lawrence Livermore Natl Lab
  • Univ Maryland
  • MIT
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  • Univ Mississippi
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  • Northeastern Univ
  • Northwestern Univ
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  • Ohio State Univ
  • Princeton Univ
  • Univ Puerto Rico
  • Purdue Univ
  • Purdue Univ Calumet
  • Rice Univ
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  • Vanderbilt Univ
  • Univ Virginia
  • Wayne State Univ
  • Univ Wisconsin
  • Vienna Univ Technol
  • Universidade Estadual de Campinas (UNICAMP)
  • Suez Univ
  • British Univ Egypt
  • Fayoum Univ
  • Ain Shams Univ
  • Sultan Qaboos Univ
  • Univ Haute Alsace
  • Brandenburg Tech Univ Cottbus
  • Eotvos Lorand Univ
  • Visva Bharati Univ
  • King Abdulaziz Univ
  • Univ Ruhuna
  • Isfahan Univ Technol
  • Univ Tehran
  • Islamic Azad Univ
  • Univ Siena
  • Univ Michoacana
  • St Petersburg State Polytech Univ
  • Scuola Normale
  • Sezione Ist Nazl Fis Nucl
  • Albert Einstein Ctr Fundamental Phys
  • Gaziosmanpasa Univ
  • Adiyaman Univ
  • Cag Univ
  • Anadolu Univ
  • Izmir Inst Technol
  • Necmettin Erbakan Univ
  • Ozyegin Univ
  • Marmara Univ
  • Kafkas Univ
  • Univ Southampton
  • Mimar Sinan Univ
  • Argonne Natl Lab
  • Erzincan Univ
  • Yildiz Tekn Univ
  • Texas A&M Univ Qatar
ISSN: 
1029-8479
Sponsorship: 
  • Austrian Federal Ministry of Science, Research and Economy
  • Austrian Science Fund
  • Belgian Fonds de la Recherche Scientifique
  • 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
  • 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, Estonia
  • Estonian Research Council, Estonia
  • European Regional Development Fund, Estonia
  • Academy of Finland
  • Finnish Ministry of Education and Culture
  • Helsinki Institute of Physics
  • Institut National de Physique Nucleaire et de Physique des Particules / CNRS, France
  • Commissariat a l'Energie 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)
  • CINVESTAV
  • CONACYT
  • SEP
  • 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
  • ETH Board
  • ETH Zurich
  • PSI
  • SNF
  • UniZH
  • Canton Zurich
  • 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, Ukraine
  • State Fund for Fundamental Researches, Ukraine
  • Science and Technology Facilities Council, UK
  • 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 l'Industrie et dans l'Agriculture (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 Foundation for Polish Science
  • European Union
  • Regional Development Fund
  • Compagnia di San Paolo (Torino)
  • Consorzio per la Fisica (Trieste)
  • MIUR (Italy)
  • Thalis programme
  • Aristeia programme
  • EU-ESF
  • Greek NSRF
  • National Priorities Research Program by Qatar National Research Fund
Sponsorship Process Number: 
  • Estonian Research Council, Estonia: IUT23-4
  • Estonian Research Council, Estonia: IUT23-6
  • MIUR: 20108T4XTM
Abstract: 
Dimuon and dielectron mass spectra, obtained from data resulting from protonproton collisions at 8TeV and recorded by the CMS experiment, are used to search for both narrow resonances and broad deviations from standard model predictions. The data correspond to an integrated luminosity of 20.6 (19.7) fb(-1) for the dimuon (dielectron) channel. No evidence for non-standard-model physics is observed and 95% confidence level limits are set on parameters from a number of new physics models. The narrow resonance analyses exclude a Sequential Standard Model Z(SSM)' resonance lighter than 2.90TeV, a superstring-inspired Z(psi)' lighter than 2.57TeV, and Randall-Sundrum Kaluza-Klein gravitons with masses below 2.73, 2.35, and 1.27TeV for couplings of 0.10, 0.05, and 0.01, respectively. A notable feature is that the limits have been calculated in a model-independent way to enable straightforward reinterpretation in any model predicting a resonance structure. The observed events are also interpreted within the framework of two non-resonant analyses: one based on a large extra dimensions model and one based on a quark and lepton compositeness model with a left-left isoscalar contact interaction. Lower limits are established on M-S, the scale characterizing the onset of quantum gravity, which range from 4.9 to 3.3TeV, where the number of additional spatial dimensions varies from 3 to 7. Similarly, lower limits on Lambda, the energy scale parameter for the contact interaction, are found to be 12.0 (15.2) TeV for destructive (constructive) interference in the dimuon channel and 13.5 (18.3) TeV in the dielectron channel.
Issue Date: 
7-Apr-2015
Citation: 
Journal Of High Energy Physics. New York: Springer, n. 4, p. 1-49, 2015.
Time Duration: 
1-49
Publisher: 
Springer
Keywords: 
  • Hadron-Hadron Scattering
  • Beyond Standard Model
  • Particle and resonance production
Source: 
http://link.springer.com/article/10.1007%2FJHEP04%282015%29025
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/129577
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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