标题： CME的能量和系统尺寸依赖性 显示英文标题

标题： Beam-energy and system-size dependence of the CME

摘要： 局部${\cal P}$和${\cal CP}$破坏在Au+Au和Cu+Cu碰撞中的能量依赖性在一个大的能量范围内被简单现象学模型估计。预计在LHC下，手征磁效应（CME）将比在RHIC下弱约20倍。在较低的能量范围内，这种效应应该在高于顶级SPS能量的某个能量处急剧消失。为了阐明CME背景效应，提出了一种包括磁场演化的输运模型。 显示英文摘要

摘要： The energy dependence of the local ${\cal P}$ and ${\cal CP}$ violation in Au+Au and Cu+Cu collisions in a large energy range is estimated within a simple phenomenological model. It is expected that at LHC the Chiral Magnetic effect (CME) will be about 20 times weaker than at RHIC. In the lower energy range this effect should vanish sharply at energy somewhere above the top SPS one. To elucidate CME background effects a transport model including magnetic field evolution is put forward.