D-Meson Azimuthal Anisotropy in Midcentral Pb-Pb Collisions at √sNN = 5.02 TeV
ALICE Collaboration. (2018). D-Meson Azimuthal Anisotropy in Midcentral Pb-Pb Collisions at √sNN = 5.02 TeV. Physical Review Letters, 120(10), Article 102301. https://doi.org/10.1103/PhysRevLett.120.102301
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Physical Review LettersAuthors
Date
2018Copyright
© 2018 CERN, for the ALICE Collaboration. This is an open access article distributed under the terms of the Creative Commons License.
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.
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Except where otherwise noted, this item's license is described as © 2018 CERN, for the ALICE Collaboration. This is an open access article distributed under the terms of the Creative Commons License.
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