论文标题
测试与测试颗粒的大小相撞系统中的集体性
Testing the collectivity in large and small colliding systems with test particles
论文作者
论文摘要
我们提出了一种测试粒子方法，以探测大和小离子碰撞系统中集体流量的建立和发展的运输动力学。我们将测试粒子作为乘客将au $+$ au中心碰撞创建的派对媒介置于$ \ sqrt {s_ {nn}} $ = 200 GEV和$ p $ $+$+$+$ pb central碰撞，$ \ sqrt {s_ {nn}} $ = 5.02 $ = 5.02 tev，使用乘法;在两个极端测试案例中的测试粒子的帮助下，我们证明了Parton碰撞在建立和发展大型和小型碰撞系统中的集体性方面起着重要作用。与小型碰撞系统相比，在大型碰撞系统中，最终州Parton碰撞所建立的集体性要强得多。由于较少的Parton碰撞，在小型碰撞系统中，初始状态的集体性可以在小型碰撞系统中持续或更容易生存。我们的研究提供了一种新的方法，可以理解BNL相对论重离子对撞机和CERN大型强子对撞机的大小相撞系统中集体的起源。
We propose a test-particle method to probe the transport dynamics of the establishment and development of collective flow in large and small systems of heavy-ion collisions. We place test particles as passengers into the partonic medium created by Au$+$Au midcentral collisions at $\sqrt{s_{NN}}$ = 200 GeV and $p$ $+$ Pb central collisions at $\sqrt{s_{NN}}$ = 5.02 TeV, using a multiphase transport model. With the help of test particles in two extreme test cases, we demonstrate that parton collisions play an important role in establishing and developing collectivity in large and small colliding systems. The collectivity established by final state parton collisions is much stronger in large colliding systems compared to small colliding systems. The collectivity from the initial state can persist or survive more easily in small colliding systems than in large colliding systems due to fewer parton collisions. Our study provides a new method to understand the origin of collectivity in large and small colliding systems at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider.
