论文标题
汉伯里棕色 - 二维斯干涉和集体的小型系统
Hanbury Brown--Twiss Interferometry and Collectivity in Small Systems
论文作者
论文摘要
汉伯里·布朗（Hanbury Brown-Twiss）干涉法（HBT）提供了对时空结构和冻结核碰撞的动量空间演变的关键见解。特别是，HBT半径对横向对动量$ k_t $和系统充电的多样性$ dn _ {\ mathrm {ch}}/dη$的依赖性可能反映出驱动小型系统中集体行为的机制。本文认为，如果小型系统以高多性性地进化流体动力学，则可以自然理解在HBT半径的多样性依赖性中观察到的某些特征。因此，这项研究建立了HBT在流体动力学中的多样性依赖性的基线，这可能被证明可用于区分核碰撞中的集体竞争模型。
Hanbury Brown--Twiss interferometry (HBT) provides crucial insights into both the space-time structure and the momentum-space evolution of ultrarelativistic nuclear collisions at freeze-out. In particular, the dependence of the HBT radii on the transverse pair momentum $K_T$ and the system charged multiplicity $dN_{\mathrm{ch}}/dη$ may reflect the mechanisms driving collective behavior in small systems. This paper argues that certain features observed in the multiplicity dependence of the HBT radii can be naturally understood if small systems evolve hydrodynamically at high-multiplicity. This study thus establishes a baseline for the multiplicity dependence of HBT in hydrodynamics which may prove useful in discriminating between competing models of collectivity in nuclear collisions.
