We use the string melting version of a multi-phase transport (AMPT) model to study Cu+Au collisions at \(\sqrt{s_{NN}}=200\) GeV. The rapidity distributions of identified hadrons show asymmetric dependences on rapidity. In addition, elliptic and triangular flows at mid-rapidity from the AMPT model for pions, kaons, and protons agree reasonably with the experimental data up to \(p_{T}\sim 1\) GeV/c. We then investigate the forward/backward asymmetry of \(v_2\) and \(v_3\). We find that these anisotropic flows are larger on the Au-going side than the Cu-going side, while the asymmetry tends to go away in very peripheral collisions. We also make predictions on transverse momentum spectra of identified hadrons and longitudinal decorrelations of charged particles, where the average decorrelation of elliptic flow in asymmetric Cu+Au collisions is found to be stronger than that in Au+Au collisions.

中文翻译：

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来自AMPT模型的Cu + Au碰撞的粒子产生和各向异性流，$$ \ sqrt {s_ {NN}} = 200 $$ sNN = 200 GeV

我们使用多相传输（AMPT）模型的字符串熔化版本研究\（\ sqrt {s_ {NN}} = 200 \）  GeV下的Cu + Au碰撞。识别出的强子的速度分布显示出对速度的不对称依赖性。此外，来自AMPT模型的中速椭圆，三角形和三角形流（质子，钾和质子）与实验数据合理地吻合，直到\（p_ {T} \ sim 1 \）  GeV / c。然后，我们研究\（v_2 \）和\（v_3 \）的向前/向后不对称性。我们发现，这些各向异性的流动在Au前进侧比Cu前进侧大，而非对称性在非常外围的碰撞中趋于消失。我们还对确定的强子的横向动量谱和带电粒子的纵向去相关进行了预测，发现在非对称Cu + Au碰撞中椭圆流的平均去相关性强于Au + Au碰撞中的椭圆。