相对论性重离子碰撞中底部椭圆流的火球层析成像
Fireball tomography from bottomonia elliptic flow in relativistic heavy-ion collisions
摘要：
本文计算了在$\sqrt{s_{\rm NN}}=5.02$ TeV的Pb-$\,+\,$-Pb碰撞中产生的底质子的椭圆流。我们考虑了各种bottomonium态各向异性逃逸的温度依赖性衰变宽度，并观察到bottomonium椭圆流的横向动量依赖性提供了有关QGP火球在其演化不同阶段的层析信息。对于火球的时空演化，我们采用3+1D准粒子各向异性流体动力学模型的模拟结果。我们发现，我们的结果与ALICE和CMS合作的实验结果的bottomonia椭圆流的横向动量依赖性是在合理的协议。
英文摘要：
We calculate the elliptic flow of bottomonia produced in Pb$\,+\,$Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV. We consider temperature-dependent decay widths for the anisotropic escape of various bottomonium states and observe that the transverse momentum dependence of bottomonia elliptic flow provides a tomographic information about the QGP fireball at different stages of its evolution. For the space-time evolution of the fireball, we employ simulation results from the 3+1D quasiparticle anisotropic hydrodynamic model. We find that our results for transverse momentum dependence of bottomonia elliptic flow are in reasonable agreement with experimental results from the ALICE and CMS collaborations.
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