Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 71, Issue 3, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-011-1575-8
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Funding
- Austrian Federal Ministry of Science and Research
- Belgium 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
- Ministry of Science and Technology
- National Natural Science Foundation of China
- Colombian Funding Agency (COLCIENCIAS)
- Croatian Ministry of Science, Education and Sport
- Research Promotion Foundation, Cyprus
- Estonian Academy of Sciences
- NICPB
- Academy of Finland
- Finnish Ministry of Education
- Helsinki Institute of Physics
- Institut National de Physique Nucleaire et de Physique des Particules/CNRS
- Commissariat a l'Energie Atomique, 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 Office for Research and Technology, Hungary
- Department of Atomic Energy
- 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
- NRF, Korea
- Lithuanian Academy of Sciences
- Mexican Funding Agency CINVESTAV
- Mexican Funding Agency CONACYT
- Mexican Funding Agency SEP
- Mexican Funding Agency UASLP-FAI
- Pakistan Atomic Energy Commission
- State Commission for Scientific Research, Poland
- Fundacao para a Ciencia e a Tecnologia, Portugal
- JINR, Armenia
- JINR, Belarus
- JINR, Georgia
- JINR, Ukraine
- JINR, Uzbekistan
- Ministry of Science and Technologies of the Russian Federation
- Russian Ministry of Atomic Energy
- Ministry of Science and Technological Development of Serbia
- Ministerio de Ciencia e Innovacion
- Programa Consolider-Ingenio 2010, 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
- National Science Council, Taipei
- Scientific and Technical Research Council of Turkey
- Turkish Atomic Energy Authority
- Science and Technology Facilities Council, UK
- US Department of Energy
- US National Science Foundation
- European Union
- Leventis Foundation
- A. P. Sloan Foundation
- Alexander von Humboldt Foundation
- Associazione per lo Sviluppo Scientifico e Tecnologico del Piemonte (Italy)
- 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)
- STFC [ST/I002200/1, ST/I505572/1, PP/E002722/1, ST/F007094/1, ST/G502412/1, ST/I000410/1, ST/H00081X/2, ST/F006748/1, ST/I005912/1, ST/I002839/1, ST/G502347/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F007094/1, ST/G502412/1, ST/I005912/1, GRIDPP, ST/G502347/1, CMS, ST/F006748/1, PP/D004284/1, ST/I002200/1, ST/I005912/1 GRIDPP, PP/E002722/1, ST/I002839/1, ST/I505572/1, ST/I000410/1] Funding Source: researchfish
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The production of J/psi mesons is studied in pp collisions at root s = 7 TeV with the CMS experiment at the LHC. The measurement is based on a dimuon sample corresponding to an integrated luminosity of 314 nb(-1). The J/psi differential cross section is determined, as a function of the J/psi transverse momentum, in three rapidity ranges. A fit to the decay length distribution is used to separate the prompt from the non-prompt (b hadron to J/psi) component. Integrated over J/psi transverse momentum from 6.5 to 30 GeV/c and over rapidity in the range vertical bar y vertical bar < 2.4, the measured cross sections, times the dimuon decay branching fraction, are 70.9 +/- 2.1(stat.) +/- 3.0(syst.) +/- 7.8(luminosity) nb for prompt J/psi mesons assuming unpolarized production and 26.0 +/- 1.4(stat.) +/- 1.6(syst.) +/- 2.9(luminosity) nb for J/psi mesons from b-hadron decays.
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