There is strong evidence for the formation of small droplets of quark-gluon plasma in $p/d/^{3}$He+Au collisions at the Relativistic Heavy Ion Collider (RHIC) and in $p$+$p$/Pb collisions at the Large Hadron Collider. In particular, the analysis of data at RHIC for different geometries obtained by varying the projectile size and shape has proven insightful. In the present analysis, we find excellent agreement with the previously published PHENIX at RHIC results on elliptical and triangular flow with an independent analysis via the two-particle correlation method, which has quite different systematic uncertainties and an independent code base. In addition, the results are extended to other detector combinations with different kinematic (pseudorapidity) coverage. These results provide additional constraints on contributions from nonflow and longitudinal decorrelations.
$v_2$ vs $p_T$, p+Au at 200 GeV, 0-5% central, BBCS-FVTXS-CNT detector combination
$v_2$ vs $p_T$, d+Au at 200 GeV, 0-5% central, BBCS-FVTXS-CNT detector combination
$v_2$ vs $p_T$, 3He+Au at 200 GeV, 0-5% central, BBCS-FVTXS-CNT detector combination
The elliptic and triangular flow coefficients $v_2$ and $v_3$ of prompt D$^{0}$, D$^{+}$, and D$^{*+}$ mesons were measured at midrapidity ($|y|<0.8$) in Pb-Pb collisions at the centre-of-mass energy per nucleon pair of $\sqrt{s_{NN}} = 5.02$ TeV with the ALICE detector at the LHC. The D mesons were reconstructed via their hadronic decays in the transverse momentum interval $1< p_{\rm T}<36$ GeV/$c$ in central (0-10%) and semi-central (30-50%) collisions. Compared to pions, protons, and J/$\psi$ mesons, the average D-meson $v_{n}$ harmonics are compatible within uncertainties with a mass hierarchy for $p_{\rm T} \lesssim 3$ GeV/$c$, and are similar to those of charged pions for higher $p_{\rm T}$. The coupling of the charm quark to the light quarks in the underlying medium is further investigated with the application of the event-shape engineering (ESE) technique to the D-meson $v_2$ and $p_{\rm T}$-differential yields. The D-meson $v_2$ is correlated with average bulk elliptic flow in both central and semi-central collisions. Within the current precision, the ratios of per-event D-meson yields in the ESE-selected and unbiased samples are found to be compatible with unity. All the measurements are found to be reasonably well described by theoretical calculations including the effects of charm-quark transport and the recombination of charm quarks with light quarks in a hydrodynamically expanding medium.
Average $v_2${SP} vs. $p_\mathrm{T}$ of prompt D$^0$, D$^+$, and D$^{*+}$ mesons in Pb-Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV in the centrality class 0-10% in the rapidity interval $|y|<0.8$. The first (sys,data) error is the systematic uncertainty from all the other sources except for the B feed-down. The second (sys,FD) error is the systematic uncertainty from the B feed-down contribution.
Average $v_2${SP} vs. $p_\mathrm{T}$ of prompt D$^0$, D$^+$, and D$^{*+}$ mesons in Pb-Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV in the centrality class 30-50% in the rapidity interval $|y|<0.8$. The first (sys,data) error is the systematic uncertainty from all the other sources except for the B feed-down. The second (sys,FD) error is the systematic uncertainty from the B feed-down contribution.
Average $v_3${SP} vs. $p_\mathrm{T}$ of prompt D$^0$, D$^+$, and D$^{*+}$ mesons in Pb-Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV in the centrality class 0-10% in the rapidity interval $|y|<0.8$. The first (sys,data) error is the systematic uncertainty from all the other sources except for the B feed-down. The second (sys,FD) error is the systematic uncertainty from the B feed-down contribution.
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