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arXiv 2203.09786nucl-th
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高能重离子碰撞中的自旋效应

Spin Effects In Heavy Ion Collisions at High Energies

Zuo-tang Liang

摘要:

在非中心高能重离子碰撞中,碰撞系统沿反应面的法线方向具有巨大的轨道角动量。由于系统中的自旋轨道相互作用,如此巨大的轨道角动量导致碰撞中产生的夸克物质系统中的夸克和反夸克的自旋极化。这种效应,被称为全球极化效应,在许多年前就被预测到了,并且已经被RHIC的STAR合作所证实。整体极化效应的发现为重离子物理,特别是夸克-胶子等离子体的性质研究开辟了一条新的途径。本报告将简要回顾导致预测的原始想法和计算,并总结相关方面的进展和问题。

英文摘要:

In non-central high energy heavy ion collisions, the colliding system possesses a huge orbital angular momentum along the normal direction of the reaction plane. Due to the spin orbit interaction in the system, such a huge orbital angular momentum leads to the spin polarization of quarks and anti-quarks in the quark matter system produced in the collision. Such an effect, known as the global polarization effect, was predicted many years ago and has been confirmed by the STAR collaboration at RHIC. The discovery of the global polarization effect opens a new avenue in heavy ion physics in general and in studying the properties of quark-gluon plasma in particular. This talk will briefly review the original ideas and calculations that lead to the prediction and summarize progresses and problems in related aspects.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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