D-Meson Azimuthal Anisotropy in Midcentral Pb-Pb Collisions at ffiffi s p NN = 5.02 TeV.
|Authors||ALICE Collaboration and Barnby, Lee|
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 √ 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.
The azimuthal anisotropy coefficient
|Keywords||Particle physics; Nuclear reactions; Relativistic heavy iIon-collisions|
|Journal||Physical Review Letters|
|Digital Object Identifier (DOI)||https://doi.org/10.1103/PhysRevLett.120.102301|
|Web address (URL)||http://hdl.handle.net/10545/622344|
|Publication dates||09 Mar 2018|
|Publication process dates|
|Deposited||16 Mar 2018, 09:20|
|Contributors||STFC Daresbury Laboratory|
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