论文标题
$ p $（$ d $）+au+au+au碰撞中的费用分离测量值；对手性磁效应的影响
Charge separation measurements in $p$($d$)+Au and Au+Au collisions; implications for the chiral magnetic effect
论文作者
论文摘要
相对于$ 2^{\ rm {\ rm {nd}} $ - 订单（$ψ_2$）和$ 3^{\ rm {rd}} $ - 订单（$ψ_3$）的$ 2^{\ rm {nd}} $ - 订单（$ψ_2$）获得的收费分离（$ΔS$）测量值$ p $（$ d $）+au和au+au碰撞$ \ sqrt {s_ {nn}} = 200 $ 〜Gev。对假设的手性磁效应（CME）敏感的相关器显示了相对于$ψ_3$的测量值的背景驱动电荷分离的预期模式，而相对于$ P $（$ D $）+AU系统的$ψ_2$相对于$ψ_2$。相比之下，Au+Au相对于$ψ_2$，显示事件形状独立于$ {r_ {ψ_2}（ΔS）} $分布与CME驱动的电荷分离一致，通过与傅立叶二极管系数不相关的宽度来量化，以与傅立叶二极管系数不相关的宽度评估$ \ tilde} us} $ {这些宽度的提取值及其对中心性和事件形状的依赖性为相对论重型离子碰撞中可能的CME驱动电荷分离提供了新的限制。
Charge separation ($ΔS$) measurements, obtained relative to the $2^{\rm{nd}}$-order ($Ψ_2$) and $3^{\rm{rd}}$-order ($Ψ_3$) event planes with a new charge-sensitive correlator ${R_{Ψ_m}(ΔS)}$, are presented for $p$($d$)+Au and Au+Au collisions at $\sqrt{s_{NN}}=200$~GeV. The correlator, which is sensitive to the hypothesized Chiral Magnetic Effect (CME), show the expected patterns of background-driven charge separation for the measurements relative to $Ψ_3$ and those relative to $Ψ_2$ for the $p$($d$)+Au systems. By contrast, the Au+Au measurements relative to $Ψ_2$, show event-shape-independent ${R_{Ψ_2}(ΔS)}$ distributions consistent with a CME-driven charge separation, quantified by widths having an inverse relationship to the Fourier dipole coefficient $\tilde{a}_1$, which evaluates the CME. The extracted values of these widths and their dependencies on centrality and event-shape give new constraints for possible CME-driven charge separation in relativistic heavy-ion collisions.
