Journal
PHYSICS LETTERS B
Volume 718, Issue 4-5, Pages 1273-1283Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2012.11.059
Keywords
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Funding
- Calouste Gulbenkian Foundation from Lisbon
- Swiss Fonds Kidagan, Armenia
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Financiadora de Estudos e Projetos (FINEP)
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)
- National Natural Science Foundation of China (NSFC)
- Chinese Ministry of Education (CMOE)
- Ministry of Science and Technology of China (MSTC)
- Ministry of Education and Youth of the Czech Republic
- Danish Natural Science Research Council
- Carlsberg Foundation
- Danish National Research Foundation
- European Research Council under the European Community's Seventh Framework Programme
- Helsinki Institute of Physics
- Academy of Finland
- French CNRS-IN2P3
- Region Pays de Loire
- Region Alsace
- Region Auvergne
- CEA, France
- German BMBF and the Helmholtz Association
- General Secretariat for Research and Technology
- Ministry of Development, Greece
- Hungarian OTKA
- National Office for Research and Technology (NKTH)
- Department of Atomic Energy of the Government of India
- Department of Science and Technology of the Government of India
- Istituto Nazionale di Fisica Nucleare (INFN) of Italy
- MEXT, Japan
- Joint Institute for Nuclear Research, Dubna
- National Research Foundation of Korea (NRF)
- CONACYT
- DGAPA, Mexico
- ALFA-EC
- HELEN Program (High-Energy Physics Latin-American-European Network)
- Stichting voor Fundamenteel Onderzoek der Materie (FOM)
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands
- Research Council of Norway (NFR)
- Polish Ministry of Science and Higher Education
- National Authority for Scientific Research - NASR (Autoritatea Nationala pentru Cercetare Stiintifica - ANCS)
- Federal Agency of Science of the Ministry of Education and Science of Russian Federation
- International Science and Technology Center
- Russian Academy of Sciences
- Russian Federal Agency of Atomic Energy
- Russian Federal Agency for Science and Innovations
- CERN-INTAS
- Ministry of Education of Slovakia
- Department of Science and Technology, South Africa
- CIEMAT
- EELA
- Ministerio de Educacion y Ciencia of Spain
- Xunta de Galicia (Conselleria de Educacion)
- CEADEN
- Cubaenergia
- Cuba
- IAEA (International Atomic Energy Agency)
- Swedish Research Council (VR)
- Knut AMP
- Alice Wallenberg Foundation (KAW)
- Ukraine Ministry of Education and Science
- United Kingdom Science and Technology Facilities Council (STFC)
- United States Department of Energy
- United States National Science Foundation
- State of Texas
- State of Ohio
- STFC [ST/J000140/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/J000140/1, GRIDPP] Funding Source: researchfish
- Grants-in-Aid for Scientific Research [20224014, 23340074] Funding Source: KAKEN
- Direct For Mathematical & Physical Scien
- Division Of Physics [0968903, 0969966] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [970048] Funding Source: National Science Foundation
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The ALICE Collaboration has made the first measurement at the LHC of J/psi photoproduction in ultra-peripheral Pb-Pb collisions at root s(NN) = 2.76 TeV. The J/psi is identified via its dimuon decay in the forward rapidity region with the muon spectrometer for events where the hadronic activity is required to be minimal. The analysis is based on an event sample corresponding to an integrated luminosity of about 55 mu b(-1). The cross section for coherent J/psi production in the rapidity interval -3.6 < y < -2.6 is measured to be d sigma(coh)(J/psi)/dy = 1.00 +/- 0.18(stat)(-0.26)(+0.24)(syst) mb. The result is compared to theoretical models for coherent J/psi production and found to be in good agreement with those models which include nuclear gluon shadowing. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
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