Scaling behaviors of heavy flavor meson suppression and flow in different nuclear collision systems at the LHC
Scaling behaviors of heavy flavor meson suppression and flow in different nuclear collision systems at the LHC
复制标题
大型强子对撞机不同核碰撞系统中重味介子抑制和流动的尺度行为
DOI：
10.1140/epjc/s10052-021-09833-y
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发表时间：
2021-08
期刊：
影响因子：
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通讯作者：
Guang-You Qin
中科院分区：
文献类型：
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作者：
Shu-Qing Li;Wen-Jing Xing;Xiang-Yu Wu;Shanshan Cao;Guang-You Qin
通过研究LHC上Pb-Pb、Xe-Xe、Ar-Ar和O-O碰撞中的重味介子抑制和椭圆流，探讨了重夸克-QGP相互作用对系统尺寸的依赖性。QGP的时空演化采用（3+1）维粘性流体动力学模型，而重夸克与QGP的相互作用则采用改进的Langevin方法，该方法考虑了热介质中的碰撞和辐射能量损失。在这个框架内，我们给出了Pb-Pb碰撞中D介子抑制和流系数的合理描述，以及对其他有待测量的碰撞系统中D和B介子观测值的预言.我们发现重介子的抑制与碰撞核的大小有明显的等级关系，而它们的椭圆流系数则依赖于系统的大小和QGP的几何各向异性。预测了O-O碰撞中D和B介子的尺寸抑制和流动，它们是连接大碰撞系统和小碰撞系统的喷注猝灭的重要桥梁。本文给出了重介子抑制因子和重介子体积偏心率重标度椭圆流的标度函数与重离子碰撞中核子数的关系。
We explore the system size dependence of heavy-quark-QGP interaction by studying the heavy flavor meson suppression and elliptic flow in Pb–Pb, Xe–Xe, Ar–Ar and O–O collisions at the LHC. The space-time evolution of the QGP is simulatedusing a (3+1)-dimensional viscous hydro-dynamic model, while the heavy-quark-QGP interaction is described by an improved Langevin approach that includes both collisional and radiative energy loss inside a thermal medium. Within this framework, we provides a reasonable description of the D meson suppression and flow coefficients in Pb–Pb collisions, as well as predictions for both D and B meson observables in other collision systems yet to be measured. We find a clear hierarchy for the heavy meson sup-pression with respect to the size ofthe colliding nuclei, while their elliptic flow coefficient relies on both the system size and the geometric anisotropy of the QGP. Sizable suppression and flow are predicted for both D and B mesons in O–O collisions, which serve as a crucial bridge of jet quenching between large and small collision systems. Scaling behav-iors between different collision systems are shown for heavy meson suppression factor and the bulk-eccentricity-rescaled heavy meson elliptic flow as functions of the number of participant nucleons in heavy-ion collisions.
DOI：
10.1017/9781108651998
发表时间：
2017-12
期刊：
arXiv: Nuclear Theory
影响因子：
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作者：
P. Romatschke;U. Romatschke
通讯作者：
P. Romatschke;U. Romatschke