论文标题
探测重型离子碰撞的初始状态的结构
Probing the structure of the initial state of heavy-ion collisions with $p_T$-dependent flow fluctuations
论文作者
论文摘要
初始状态几何形状与各向异性流之间的连接可以通过$ P_T $集成的流量谐波和初始横向能分布的累积物之间的良好映射来量化。在本文中，我们成功地将此映射扩展到还包括$ P_T $ -Differential Flow。在这样做的过程中，我们发现在线性和非线性方案中，各向异性流的转向型主要成分都可以揭示出先前未观察到的流体动力响应细节。最重要的是，我们表明它们提供了有关相对论重型离子碰撞初始阶段中存在的小规模结构的新信息。
The connection between initial-state geometry and anisotropic flow can be quantified through a well-established mapping between $p_T$-integrated flow harmonics and cumulants of the initial transverse energy distribution. In this paper we successfully extend this mapping to also include $p_T$-differential flow. In doing so, we find that subleading principal components of anisotropic flow can reveal previously unobserved details of the hydrodynamic response, in both the linear and the nonlinear regimes. Most importantly, we show that they provide novel information on the small-scale structures present in the initial stage of relativistic heavy-ion collisions.
