论文标题
au+au和isobar碰撞中轻载体的导向流的流体动力模拟$ \ sqrt {s _ {\ textrm {nn}}} = $ 200 GEV
Hydrodynamic simulations of directed flow for light hadrons in Au+Au and isobar collisions $\sqrt{s_{\textrm{NN}}}=$ 200 GeV
论文作者
论文摘要
使用（3+1）-D流体动力模型Clvisc，我们研究了在Au+Au，Ru+Ru+Ru+Ru和Zr+Zr Collisions中产生的有向流（$ v_ {1} $），$ \ sqrt {s _ {\ textrm {nn}}} = $ 200 GEV。系统地研究了倾斜的能量密度，压力梯度和径向流的演变。逆时针倾斜的初始火球被证明是最终轻载体的定向流量的重要来源。在RHIC中央和中部AU+AU和ISOBAR碰撞中，提供了对定向流的良好描述。我们的数值结果表明，在不同的碰撞系统中，轻质强子$ V_ {1} $的系统尺寸依赖性清晰。我们进一步研究了核结构对有向流的影响，并发现轻质黑龙的$ V_ {1} $对具有四倍变形的核不敏感。
Using a (3+1)-D hydrodynamic model CLVisc, we study the directed flow ($v_{1}$) of light hadrons produced in Au+Au, Ru+Ru and Zr+Zr collisions at $\sqrt{s_{\textrm{NN}}}=$ 200 GeV. The evolution of tilted energy density, pressure gradient and radial flow along the $x$-direction are systematically investigated. Counter-clockwise tilt of initial fireball is shown to be a vital source of the directed flow for final light hadrons. A good description of directed flow is provided for light hadrons in central and mid-central Au+Au and isobar collisions at RHIC. Our numerical results show a clear system size dependence for light hadron $v_{1}$ across different collision systems. We further study the effect of nuclear structure on the directed flow and find that the $v_{1}$ for light hadrons is insensitive to the nuclei with quadrupole deformation.
