D-Meson Azimuthal Anisotropy in Midcentral Pb-Pb Collisions at ffiffi s p NN = 5.02 TeV.
AffiliationSTFC Daresbury Laboratory
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AbstractThe 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 √ s N N = 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.
CitationALICE Collaboration (2018) 'D-Meson Azimuthal Anisotropy in Midcentral Pb-Pb Collisions at ffiffi s p NN = 5.02 TeV.', Physical Review Letters, Vol. 120, Iss. 10 — 9
JournalPhysical Review Letters