/ nucl-ex CERN-PH-EP-2013-085

D meson elliptic flow in non-central Pb-Pb collisions at sqrts(s_NN) = 2.76TeV

Pages: 17

Abstract: Azimuthally anisotropic distributions of D0, D+ and D*+ mesons were studied in the central rapidity region (|y|<0.8) in Pb-Pb collisions at a centre-of-mass energy sqrts(s_NN) = 2.76TeV per nucleon-nucleon collision, with the ALICE detector at the LHC. The second Fourier coefficient v2 (commonly denoted elliptic flow) was measured in the centrality class 30-50% as a function of the D meson transverse momentum pt, in the range 2-16GeV/c\$. The measured v2 of D mesons is comparable in magnitude to that of light-flavour hadrons. It is positive in the range 2 < pt < 6 GeV/c with 5.7 sigma significance, based on the combination of statistical and systematic uncertainties.

Note: *Temporary entry*; 17 pages, 3 captioned figures, authors from page 10 to page 12

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