论文标题
大型强子对撞机的超外外PB+PB碰撞中的集体性
Collectivity in Ultra-Peripheral Pb+Pb Collisions at the Large Hadron Collider
论文作者
论文摘要
我们介绍了大型强子对撞机上的超外外PB+PB碰撞的第一个完整（3+1）D动力学模拟。从P+PB碰撞中推断出来，我们探索了超现实的光子$γ^*$与超外腹碰撞中与铅核相互作用的相互作用是否会产生表现出表现流体行为的多体系统。假设最终状态相互作用，我们为带电的强子多重性，鉴定的粒子平均横向动量和带电的强子各向异性流量系数提供模型结果，并将它们与爱丽丝和地图集协作的实验数据进行比较。 P+Pb和$γ^*$+PB碰撞之间的椭圆流层次结构主要由纵向流动解义的差异，并很好地再现了实验数据。我们已经证明，我们的理论框架提供了一种定量工具，可以研究所有系统尺寸的粒子生产和集体性，从中央重型离子碰撞到相对论重型离子对撞机和大型强子对撞机的小型不对称碰撞系统，甚至在未来的电子碰撞器上。
We present the first full (3+1)D dynamical simulations of ultra-peripheral Pb+Pb collisions at the Large Hadron Collider. Extrapolating from p+Pb collisions, we explore whether a quasi-real photon $γ^*$ interacting with the lead nucleus in an ultra-peripheral collision can create a many-body system exhibiting fluid behavior. Assuming strong final-state interactions, we provide model results for charged hadron multiplicity, identified particle mean transverse momenta, and charged hadron anisotropic flow coefficients, and compare them with experimental data from the ALICE and ATLAS collaborations. The elliptic flow hierarchy between p+Pb and $γ^*$+Pb collisions is dominated by the difference in longitudinal flow decorrelations and reproduces the experimental data well. We have demonstrated that our theoretical framework provides a quantitative tool to study particle production and collectivity for all system sizes, ranging from central heavy-ion collisions to small asymmetric collision systems at the Relativistic Heavy-Ion Collider and the Large Hadron Collider and even at the future Electron-Ion Collider.
