D-Meson Azimuthal Anisotropy in Midcentral Pb-Pb Collisions √SNN=5.02 TeV

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초록

The azimuthal anisotropy coefficient v(2) of prompt D-0, D+, D*+, and D-s(+) mesons was measured in midcentral (30%-50% centrality class) Pb-Pb collisions at a center-of-mass energy per nucleon pair root s(NN)=5.02 TeV, with the ALICE detector at the LHC. The D mesons were reconstructed via their hadronic decays at midrapidity, |y| < 0.8, in the transverse momentum interval 1 < p(T) < 24 GeV/c. The measured D-meson v(2) has similar values as that of charged pions. The D-s(+) v(2), measured for the first time, is found to be compatible with that of nonstrange D mesons. The measurements are compared with theoretical calculations of charm-quark transport in a hydrodynamically expanding medium and have the potential to constrain medium parameters.

키워드

RELATIVISTIC NUCLEAR COLLISIONSHEAVY-ION COLLISIONSFLAVOR HADRON DECAYSQUARKONIUM PRODUCTIONELLIPTIC FLOWENERGY-LOSSCHARMCOALESCENCE
제목
D-Meson Azimuthal Anisotropy in Midcentral Pb-Pb Collisions √SNN=5.02 TeV
저자
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DOI
10.1103/PhysRevLett.120.102301
발행일
2018-03-09
유형
Article
저널명
Physical Review Letters
120
10