一种用于手征磁波探测和表征的扩展$R^{(2)}_{Ψ_m}(ΔS_2)$关联函数
An extended $R^{(2)}_{Ψ_m}(ΔS_2)$ correlator for detecting and characterizing the Chiral Magnetic Wave
摘要：
提出并检验了扩展的$R^{(2)}_{Ψ_{m}}(ΔS_{2})$关联函数，用于探测和表征与重离子碰撞中产生的手征磁波（CMW）相关的四极电荷分离（$ΔS_{2}$）。灵敏度测试涉及不同程度的代理CMW信号注入到多相传输模型（AMPT）模拟的事件，表明$R^{(2)}_{Ψ_{m}}(ΔS_{2})$关联函数提供了可辨别的响应背景和CMW驱动的电荷分离。这种区别可以通过测量相对于二阶（$Ψ_2$）和三阶（$Ψ_3$）事件平面的$R^{(2)}_{Ψ_{2}}(ΔS_{2})$和$R^{(2)}_{Ψ_{3}}(ΔS_{2})$调制器来帮助识别CMW。测试还表明，灵敏度的水平，将允许强大的实验表征CMW信号。
英文摘要：
The extended $R^{(2)}_{Ψ_{m}}(ΔS_{2})$ correlator is presented and examined for its efficacy to detect and characterize the quadrupole charge separation ($ΔS_{2}$) associated with the purported Chiral Magnetic Wave (CMW) produced in heavy-ion collisions. Sensitivity tests involving varying degrees of proxy CMW signals injected into events simulated with the Multi-Phase Transport Model (AMPT), show that the $R^{(2)}_{Ψ_{m}}(ΔS_{2})$ correlator provides discernible responses for the background- and CMW-driven charge separation. This distinction could aid identification of the CMW via measurements of the $R^{(2)}_{Ψ_{2}}(ΔS_{2})$ and $R^{(2)}_{Ψ_{3}}(ΔS_{2})$ correlators, relative to the second- ($Ψ_2$) and third-order ($Ψ_3$) event planes. The tests also indicate a level of sensitivity that would allow for robust experimental characterization of the CMW signal.
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