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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/117044
Title: 
Measurement of the muon charge asymmetry in inclusive pp -> W plus X production at root s=7 TeV and an improved determination of light parton distribution functions
Author(s): 
Institution: 
  • Yerevan Phys Inst
  • Inst Hochenergiephys 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
  • Tech Univ Split
  • 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 Haute Alsace Mulhouse
  • Inst Natl Phys Nucl & Phys Particules
  • 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 EHEP
  • Tata Inst Fundamental Res HECR
  • Inst Res Fundamental Sci IPM
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  • Petersburg Nucl Phys Inst
  • Russian Acad Sci
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  • State Res Ctr Russian Federat
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  • Vinca Inst Nucl Sci
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  • Univ Autonoma Madrid
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  • Argonne Natl Lab
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ISSN: 
1550-7998
Sponsorship: 
  • Austrian Federal Ministry of Science and Research
  • 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
  • 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
  • Commissariat a l'Energie Atomique et aux Energies Alternatives/CEA, France
  • Bundesministerium fur Bildung und Forschung
  • Deutsche Forschungsgemeinschaft
  • Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany
  • General Secretariat for Research and Technology, Greece
  • National Scientific Research Foundation
  • National Innovation Office, Hungary
  • Department of Atomic Energy and the Department of Science and Technology, India
  • Institute for Studies in Theoretical Physics and Mathematics, Iran
  • Science Foundation, Ireland
  • Istituto Nazionale di Fisica Nucleare, Italy
  • Korean Ministry of Education, Science and Technology and the World Class University program of NRF, Republic of Korea
  • Lithuanian Academy of Sciences
  • Mexican Funding Agencies (CINVESTAV, CONACYT, SEP, and UASLP-FAI)
  • Ministry of Business, Innovation and Employment, New Zealand
  • Pakistan Atomic Energy Commission
  • Ministry of Science and Higher Education
  • 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 a de Estado de Investigacion, Desarrollo e Innovacion and Programa Consolider-Ingenio, Spain
  • Swiss Funding Agencies (ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER)
  • National Science Council, 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
  • Science and Technology Facilities Council, UK
  • U.S. Department of Energy
  • U.S. National Science Foundation
  • Marie-Curie programme
  • European Research Council
  • 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 Czech Republic
  • Council of Science and Industrial Research, India
  • Compagnia di San Paolo (Torino)
  • HOMING PLUS programme of Foundation for Polish Science
  • EU, Regional Development Fund
  • EU-ESF
  • Greek NSRF
Sponsorship Process Number: 
Ministry of Education and ResearchSF0690030s09
Abstract: 
Measurements of the muon charge asymmetry in inclusive pp -> W + X production at root s = 7 TeV are presented. The data sample corresponds to an integrated luminosity of 4.7 fb(-1) recorded with the CMS detector at the LHC. With a sample of more than 20 million W -> mu nu events, the statistical precision is greatly improved in comparison to previous measurements. These new results provide additional constraints on the parton distribution functions of the proton in the range of the Bjorken scaling variable x from 10(-3) to 10(-1). These measurements and the recent CMS measurement of associated W + charm production are used together with the cross sections for inclusive deep inelastic e(+/-) p scattering at HERA in a next-to-leading-order QCD analysis. The determination of the valence quark distributions is improved, and the strange-quark distribution is probed directly through the leading-order process g + s -> W + c in proton-proton collisions at the LHC.
Issue Date: 
13-Aug-2014
Citation: 
Physical Review D. College Pk: Amer Physical Soc, v. 90, n. 3, 33 p., 2014.
Time Duration: 
33
Publisher: 
Amer Physical Soc
Source: 
http://dx.doi.org/10.1103/PhysRevD.90.032004
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/117044
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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