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Article
Report number arXiv:1709.05260 ; CERN-EP-2017-237
Title J/ψ elliptic flow in Pb-Pb collisions at sNN = 5.02 TeV
Related titleJ/ψ elliptic flow in Pb-Pb collisions at sNN = 5.02 TeV
Author(s) ALICE Collaboration  Εμφάνιση και των 1014 συγγραφέων
Corporate author(s) The ALICE collaboration
Publication 2017-12-15
Imprint 06 Sep 2017
Number of pages 13
Note 17 pages, 3 captioned figures, 1 table, authors from page 12, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/3831
Published in: Phys. Rev. Lett. 119 (2017) 242301
DOI 10.1103/PhysRevLett.119.242301
Subject category Nuclear Physics - Experiment ; hep-ex ; Particle Physics - Experiment ; nucl-ex
Accelerator/Facility, Experiment CERN LHC ; ALICE
Keywords relativistic heavy ion physics ; quark gluon plasma ; quarkonium ; experimental results
Abstract We report a precise measurement of the J/ψ elliptic flow in Pb-Pb collisions at sNN=5.02 TeV with the ALICE detector at the LHC. The J/ψ mesons are reconstructed at mid-rapidity (|y|<0.9) in the dielectron decay channel and at forward rapidity (2.5<y<4.0) in the dimuon channel, both down to zero transverse momentum. At forward rapidity, the elliptic flow v2 of the J/ψ is studied as a function of transverse momentum and centrality. A positive v2 is observed in the transverse momentum range 2<pT<8 GeV/c in the three centrality classes studied and confirms with higher statistics our earlier results at sNN=2.76 TeV in semi-central collisions. At mid-rapidity, the J/ψ v2 is investigated as a function of transverse momentum in semi-central collisions and found to be in agreement with the measurements at forward rapidity. These results are compared to transport model calculations. The comparison supports the idea that at low pT the elliptic flow of the J/ψ originates from the thermalization of charm quarks in the deconfined medium, but suggests that additional mechanisms might be missing in the models.
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Copyright/License Preprint: © 2017-2024 CERN (License: CC-BY-4.0)
Submitted by enrico.scomparin@cern.ch



 


 Δημιουργία εγγραφής 2017-09-06, τελευταία τροποποίηση 2024-11-27


Πλήρες κείμενο:
arXiv:1709.05260 - Κατέβασμα πλήρες κειμένουPDF
10.1103_PhysRevLett.119.242301 - Κατέβασμα πλήρες κειμένουPDF
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