Heavy flavor dynamics across system size at the LHC

Abstract

One of the fundamental signatures of the Quark Gluon Plasma has been the suppression of heavy flavor (specifically D mesons), which has been measured via the nuclear modification factor, $R_{AA}$ and azimuthal anisotropies, $v_n$, in large systems. However, multiple competing models can reproduce the same data for $R_{AA}$ to $v_n$. In this talk we break down the competing effects that conspire together to successfully reproduce $R_{AA}$ and $v_n$ in experimental data using Trento+v-USPhydro+DAB-MOD. Then using our best fit model we make predictions for $R_{AA}$ and $v_n$ across system size for ${}^{208}PbPb$, ${}^{129}XeXe$, ${}^{40}ArAr$, and ${}^{16}OO$ collisions. We find that 0--10\% centrality has a non-trivial interplay between the system size and eccentricities such that system size effects are masked in $v_2$ whereas in 30--50\% centrality the eccentricities are approximately constant across system size and, therefore, is a better centrality class to study D meson dynamics across system size.

arXiv comment8 pages, 5 figures, proceedings for the 36th edition of the Winter Workshop on Nuclear Dynamics

References in corpus (27)

• Full result for the QCD equation of state with 2+1 flavors
• The p_T Spectrum in Heavy-Flavour Hadroproduction
• Enhanced production of multi-strange hadrons in high-multiplicity proton-proton collisions
• Multiplicity and transverse-momentum dependence of two- and four-particle correlations in pPb and PbPb collisions
• The p_T Spectrum in Heavy-Flavour Photoproduction
• The importance of the bulk viscosity of QCD in ultrarelativistic heavy-ion collisions
• Long-range angular correlations of $\pi$, K and p in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Evidence for collective multi-particle correlations in pPb collisions
• One fluid to rule them all: viscous hydrodynamic description of event-by-event central p+p, p+Pb and Pb+Pb collisions at $\sqrt{s}=5.02$ TeV
• Measurement with the ATLAS detector of multi-particle azimuthal correlations in p+Pb collisions at sqrt(s_NN)=5.02 TeV
• Correlations from hydrodynamic flow in p-Pb collisions
• Measurement of long-range angular correlation and quadrupole anisotropy of pions and (anti)protons in central $d$$+$Au collisions at $\sqrt{s_{{}_{NN}}}$=200 GeV
• Measurements of elliptic and triangular flow in high-multiplicity ${}^3$He$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Imprints of fluctuating proton shapes on flow in proton-lead collisions at the LHC
• Mass hierarchy in identified particle distributions in proton-lead collisions
• Measurement of multi-particle azimuthal correlations in $pp$, $p$+Pb and low-multiplicity Pb+Pb collisions with the ATLAS detector
• Long-range two-particle correlations of strange hadrons with charged particles in pPb and PbPb collisions at LHC energies
• Event-by-event hydrodynamics $+$ jet energy loss: A solution to the $R_{AA}\otimes v_2$ puzzle
• D-meson azimuthal anisotropy in mid-central Pb-Pb collisions at $\sqrt{{\mathbf{s}}_{\mathrm{NN}}}=5.02$ TeV
• Azimuthal anisotropy of charged particles with transverse momentum up to 100 GeV in PbPb collisions at sqrt(s[NN]) = 5.02 TeV
• Anisotropic flow in event-by-event ideal hydrodynamic simulations of sqrt(s_{NN})=200 GeV Au+Au collisions
• Hydrodynamic Collectivity in Proton--Proton Collisions at 13 TeV
• Multiple scattering effects on heavy meson production in p+A collisions at backward rapidity
• Symmetric cumulants and event-plane correlations in Pb+Pb collisions
• Measurement of electrons from heavy-flavour hadron decays in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Elliptic flow in ultra-relativistic collisions with polarized deuterons
• Transport properties from Charm to Bottom: $p_T$ suppression, anisotropic flow $v_n$ and their correlations to the bulk dynamics