论文标题
$ \ sqrt {s _ {\ mathrm {nn}}} $ = 5.02 TEV
Elliptic and triangular flow of (anti)deuterons in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
论文作者
论文摘要
（抗）杜特隆椭圆流（$ v_2 $）的测量以及PB-PB碰撞中三角形流量（$ v_3 $）的第一个测量值，每核中心的能量每核核酸 - 核子碰撞$ \ \ sqrt {s _ {s _ {s _ {\ mathrM {在将这些测量值与其他已识别的Hadron的测量值进行比较时，观察到在低横向动量（$ p _ {\ rm t} $）处的质量排序，如相对论流体动力学所预期的那样。测得的（抗）杜特龙$ v_2 $位于简单合并和Blast-Wave模型的预测之间，这些预测仅提供了数据的良好描述，仅用于更大的外围和更中心的碰撞。对于$ v_2 $违反的质量缩放比例比（反）deuterons $ v_3 $有效。测得的$ v_2 $和$ v_3 $也与结合方法的预测与Iebe-vishnu产生的核子的相位分布与AMPT初始条件以及口气以及口气以及基于相对论水动力学的动力学模型相比，将相对性水动力学与hadronic phlronic indrotical模型相提并论。该模型预测与中央中部碰撞中不确定性中的数据一致，而中心的中心间隔则观察到偏差。
The measurements of the (anti)deuterons elliptic flow ($v_2$) and the first measurements of triangular flow ($v_3$) in Pb-Pb collisions at a center-of-mass energy per nucleon-nucleon collisions $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV are presented. A mass ordering at low transverse momentum ($p_{\rm T}$) is observed when comparing these measurements with those of other identified hadrons, as expected from relativistic hydrodynamics. The measured (anti)deuterons $v_2$ lies between the predictions from the simple coalescence and blast-wave models, which provide a good description of the data only for more peripheral and for more central collisions, respectively. The mass number scaling, which is violated for $v_2$, is approximately valid for the (anti)deuterons $v_3$. The measured $v_2$ and $v_3$ are also compared with the predictions from a coalescence approach with phase-space distributions of nucleons generated by iEBE-VISHNU with AMPT initial conditions coupled with UrQMD, and from a dynamical model based on relativistic hydrodynamics coupled to the hadronic afterburner SMASH. The model predictions are consistent with the data within the uncertainties in mid-central collisions, while a deviation is observed in central centrality intervals.
