Journal
PHYSICAL REVIEW LETTERS
Volume 105, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.252302
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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)
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- 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
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- Helsinki Institute of Physics
- Academy of Finland
- French CNRS
- Region Pays de Loire
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- CEA, France
- German BMBF
- Helmholtz Association
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- Department of Atomic Energy and 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)
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- Polish Ministry of Science and Higher Education
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- Federal Agency of Science of the Ministry of Education and Science of Russian Federation
- International Science and Technology Center, Russian Academy of Sciences
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- The U.S. Department of Energy
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- State of Texas
- State of Ohio
- Grants-in-Aid for Scientific Research [20224014] Funding Source: KAKEN
- Direct For Mathematical & Physical Scien
- Division Of Physics [0968903, 0969966] Funding Source: National Science Foundation
- Science and Technology Facilities Council [ST/F011989/1, GRIDPP] Funding Source: researchfish
- STFC [ST/F011989/1] Funding Source: UKRI
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We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at root s(NN) p = 2.76 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement is performed in the central pseudorapidity region (vertical bar eta vertical bar < 0.8) and transverse momentum range 0.2 < p(t) < 5.0 GeV/c. The elliptic flow signal v(2), measured using the 4-particle correlation method, averaged over transverse momentum and pseudorapidity is 0.087 +/- 0.002(stat) +/- 0.003(syst) in the 40%-50% centrality class. The differential elliptic flow v(2)(p(t)) reaches a maximum of 0.2 near p(t) = 3 GeV/c. Compared to RHIC Au-Au collisions at root s(NN) = 200 GeV, the elliptic flow increases by about 30%. Some hydrodynamic model predictions which include viscous corrections are in agreement with the observed increase.
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