高级检索
陈金辉. 重离子碰撞中整体极化的实验研究[J]. 原子核物理评论, 2024, 41(1): 20-25. DOI: 10.11804/NuclPhysRev.41.2023CNPC41
引用本文: 陈金辉. 重离子碰撞中整体极化的实验研究[J]. 原子核物理评论, 2024, 41(1): 20-25. DOI: 10.11804/NuclPhysRev.41.2023CNPC41
Jinhui CHEN. Experimental Studies of Global Polarization in Heavy-ion Collisions[J]. Nuclear Physics Review, 2024, 41(1): 20-25. DOI: 10.11804/NuclPhysRev.41.2023CNPC41
Citation: Jinhui CHEN. Experimental Studies of Global Polarization in Heavy-ion Collisions[J]. Nuclear Physics Review, 2024, 41(1): 20-25. DOI: 10.11804/NuclPhysRev.41.2023CNPC41

重离子碰撞中整体极化的实验研究

Experimental Studies of Global Polarization in Heavy-ion Collisions

  • 摘要: 非对心的相对论重离子碰撞在反应区域产生了巨大的轨道角动量,该轨道角动量能够以流体涡旋的形式传递到反应过程产生的夸克-胶子等离子体中(Quark-Gluon Plasma, QGP),QGP中的夸克和胶子通过自旋-轨道相互作用将沿着系统轨道角动量方向极化,即“QGP的整体极化”效应。经过近二十年的探索,重离子碰撞中Λ超子和ϕ、K*0矢量介子的整体极化的实验数据证实了QGP整体极化的新现象,这引起了研究人员的广泛关注,成为高能核物理前沿新的热点研究方向。本文简略描述重离子碰撞中整体极化的实验测量,聚焦在Λ超子的整体极化和ϕ、K*0矢量介子的自旋排列,并讨论实验数据给出的物理信息。

     

    Abstract: The huge orbital angular momentum generated by non-central relativistic heavy-ion collisions in the reaction zone can be transferred to the quark-gluon plasma (QGP) in the form of fluid vortices. Partons in the QGP will be polarized along the angular momentum through the spin-orbit interaction, the so-called “Globla Polarization”. After nearly two decades of exploration, experimental data on the global polarization of Λ hyperons and ϕ, K*0 vector mesons in heavy-ion collisions have confirmed a new phenomenon of QGP global polarization, which has attracted widespread attention from researchers and become a new hot direction in the forefront of high-energy nuclear physics. This paper briefly describe the experimental measurements of global polarization in heavy-ion collisions, focusing on the global polarization of Λ hyperons and the spin alignment of ϕ, K*0 mesons, followed by a brief discussion of the physics information provided by the experimental data.

     

/

返回文章
返回