论文标题
glasma的自旋极化和夸克的相关性
Spin polarization and correlation of quarks from glasma
论文作者
论文摘要
我们研究了在高能核碰撞与夸克和反夸克的高能核冲突的Glasma阶段的相互作用。我们利用量子动力学理论的扰动解决方案在背景颜色场中的自旋转运，该夸克由线性化的杨麦克米尔斯方程（Yang-Mills方程）控制，并为夸克 - 旋转极化和Quark-Antiquark Spin spin的表达式在小动量的小动量下在磁场相关剂方面。对于Golec-BiernatWüsthoff偶极子分布，夸克旋转极化消失，但夸克和古夸克的平面外旋转相关性并非零。我们对相关性的魔力顺序估计远远超过了涡度效应引起的，但并未完全解释矢量中介子对齐的数据。我们确定可能进一步增加预测的自旋相关的可能机制。
We investigate the interaction of strong color fields in the glasma stage of high-energy nuclear collisions with the spins of quarks and antiquarks. We employ the perturbative solution of the quantum kinetic theory for the spin transport of (massive) quarks in a background color field governed by the linearized Yang-Mills equation and derive expressions for the quark-spin polarization and quark-antiquark spin correlation at small momentum in terms of field correlators. For the Golec-Biernat Wüsthoff dipole distribution the quark-spin polarization vanishes, but the out-of-plane spin correlation of quarks and antiquarks is nonzero. Our order-of-magnitude estimate of the correlation far exceeds that caused by vorticity effects, but does not fully explain the data for vector meson alignment. We identify possible mechanisms that could further increase the predicted spin correlation.
