论文标题
LHC的系统尺寸的重型风味动态
Heavy flavor dynamics across system size at the LHC
论文作者
论文摘要
Quark Gluon等离子体的基本签名之一是抑制了浓烈风味（特别是D介子），该味道已通过核修饰因子（$ r_ {aa} $和方形各向异性，$ v_n $，$ r_ {aa} $，在大型系统中进行测量。但是，多个竞争模型可以将$ r_ {aa} $的相同数据重现为$ v_n $。在本次演讲中，我们分解了共同复制$ r_ {aa} $和$ v_n $的竞争效果，并使用trento+v-usphydro+dab-mod在实验数据中。然后，使用我们的最佳拟合模型，我们对$ r_ {aa} $和$ v_n $进行预测，用于$^{208} pbpb $，$^{129} xexe $，$^{40} arar $，以及$^{16} oo $ collisions。我们发现，0--10 \％的中心性在系统大小和偏心率之间具有非平凡的相互作用，因此系统大小效应以$ v_2 $掩盖，而在30--50 \％的中心度中，偏心率近似于系统尺寸，因此，在系统尺寸之间，偏心率是在系统尺寸跨系统大小的更好的中心性类别。
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.
