论文标题
相对论重离子碰撞中的自旋极化测量
Spin polarization measurements in relativistic heavy-ion collisions
论文作者
论文摘要
相对论重离子对撞机（RHIC）和大型强子对撞机（LHC）在相对论重离子碰撞中形成的热物质被称为夸克 - 格鲁恩等离子体（QGP）。培养基的演变为特征是非平凡的速度和涡度场，导致产生的颗粒的极化。与仅对热液场敏感的常规可观察物相比，对热液（流速和温度）梯度敏感的自旋极化是独一无二的。因此，通过LHC和Star协作对全球和局部超子旋转极化和媒介中旋转对齐的最新测量为探测QGP子结构提供了更细节的独特机会。
The hot and dense matter formed in relativistic heavy-ion collisions at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) is termed quark-gluon plasma (QGP). The evolution of the medium is characterized by non-trivial velocity and vorticity fields, resulting in the polarization of the produced particles. The spin polarization, being sensitive to the hydrothermal (flow velocity and temperature) gradients, is unique compared to conventional observables that are sensitive to the hydrothermal fields only. Hence, the recent measurements of global and local hyperon spin polarization and vector meson spin alignment by the LHC and STAR collaborations provide a unique opportunity to probe the QGP substructure with finer details.
