Status of the Chiral Magnetic Effect Search in Relativistic Heavy-Ion Collisions

Jie-Cheng Zhao, Z. Tu, Fuqiang Wang
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引用次数: 16

Abstract

Quark interactions with topological gluon fields in QCD can yield local $\mathcal{P}$ and $\mathcal{CP}$ violations which could explain the matter-antimatter asymmetry in our universe. Effects of $\mathcal{P}$ and $\mathcal{CP}$ violations can result in charge separation under a strong magnetic field, a phenomenon called the chiral magnetic effect (CME). Experimental measurements of the CME-induced charge separation in heavy-ion collisions are dominated by physics backgrounds. Major theoretical and experimental efforts have been devoted to eliminating or reducing those backgrounds. We review the current status of these efforts in the search for the CME in heavy-ion collisions.
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相对论性重离子碰撞中手性磁效应搜索的现状
QCD中夸克与拓扑胶子场的相互作用可以产生局部$\mathcal{P}$和$\mathcal{CP}$违反,这可以解释我们宇宙中的物质-反物质不对称。$\mathcal{P}$和$\mathcal{CP}$违反的效应可以在强磁场下导致电荷分离,这种现象称为手性磁效应(CME)。重离子碰撞中cme诱导电荷分离的实验测量主要受物理背景的影响。主要的理论和实验努力都致力于消除或减少这些背景。我们回顾了这些在重离子碰撞中寻找CME的努力的现状。
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