J/ψ elliptic and triangular flow in Pb-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}} $$ = 5.02 TeV

Charm quark Elliptic flow
DOI: 10.1007/jhep10(2020)141 Publication Date: 2020-10-23T06:02:48Z
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ABSTRACT
The inclusive J/$\psi$ elliptic ($v_2$) and triangular ($v_3$) flow coefficients measured at forward rapidity (2.5 $<y<$ 4) the $v_2$ midrapidity ($|y|<$ 0.9) in Pb-Pb collisions $\sqrt{s_{\rm NN}}$ = 5.02 TeV using ALICE detector LHC are reported. entire data sample collected during Run 2 is employed, amounting to an integrated luminosity of 750 $\mu$b$^{-1}$ 93 midrapidity. results obtained scalar product method reported as a function transverse momentum $p_{\rm T}$ collision centrality. At midrapidity, agreement with measurement. centrality averaged indicate positive $v_3$ significance more than 5$\sigma$ range $2<p_{\rm T}<5$ GeV/$c$. $v_2$, $v_3$, $v_3$/$v_2$ low intermediate ($p_{\rm T} \lesssim 8$ GeV/$c$) exhibit mass hierarchy when compared pions D mesons, while converging into species-independent curve higher T}$. T}$, could be interpreted terms later thermalization charm quarks light quarks, high path-length dependent effects seem dominate. measurements further microscopic transport model calculation. Using simplified extension quark scaling approach involving both components, it shown that D-meson $v_{\rm n}$ can described based on those for charged flow.
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