论文标题
初始状态的粒子相关性
Particle correlations from the initial state
论文作者
论文摘要
小型碰撞系统（$ pp $和$ p $ a）的观察，与速度长度的较长范围和方位角的特征结构有很强的相关性，是山脊现象，是大型强子对撞机上最有趣的结果之一。在相对论重离子对撞机上对重离子碰撞中这些相关性的早期观察结果标准归因于集体流，这是由于强烈的最终状态相互作用，这在粘性相对论流体动力学框架中描述了。即使在此框架中很好地描述了小尺寸系统的数据，但水动力学的适用性较低，基于最初的基于状态的机制可以解释山脊。在这篇综述中，我们从初始状态的角度讨论了粒子相关性，重点是最新的理论发展。
The observation in small size collision systems, $pp$ and $p$A, of strong correlations with long range in rapidity and a characteristic structure in azimuth, the ridge phenomenon, is one of the most interesting results obtained at the Large Hadron Collider. Earlier observations of these correlations in heavy ion collisions at the Relativistic Heavy Ion Collider are standardly attributed to collective flow due to strong final state interactions, described in the framework of viscous relativistic hydrodynamics. Even though data for small size systems are well described in this framework, the applicability of hydrodynamics is less well grounded and initial state based mechanisms have been suggested to explain the ridge. In this review, we discuss particle correlations from the initial state point of view, with focus on the most recent theoretical developments.
