D-meson azimuthal anisotropy in midcentral Pb-Pb collisions at √sNN=5.02 TeV

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2018Autor
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Abstract
The azimuthal anisotropy coefficient v2 of prompt D0 , Dþ , D*þ , and Dþs mesons was measured in midcentral (30%–50% centrality class) Pb-Pb collisions at a center-of-mass energy per nucleon pair √sNN¼ 5.02 TeV, with the ALICE detector at the LHC. The D mesons were reconstructed via their hadronic decays at midrapidity, jyj < 0.8, in the transverse momentum interval 1 < pT < 24 GeV/c. The measured D-meson v2 has similar values as that of charged pions. The Dþs v2 , measured for the first time, ...
The azimuthal anisotropy coefficient v2 of prompt D0 , Dþ , D*þ , and Dþs mesons was measured in midcentral (30%–50% centrality class) Pb-Pb collisions at a center-of-mass energy per nucleon pair √sNN¼ 5.02 TeV, with the ALICE detector at the LHC. The D mesons were reconstructed via their hadronic decays at midrapidity, jyj < 0.8, in the transverse momentum interval 1 < pT < 24 GeV/c. The measured D-meson v2 has similar values as that of charged pions. The Dþs v2 , 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. ...
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Physical review letters. Melville. Vol. 120, no. 10 (Mar. 2018), 102301, 13 p.
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