论文标题
通过两极分化的$ e^-e^+$碰撞产生任意两极化的muon对
Generation of arbitrarily polarized muon pairs via polarized $e^-e^+$ collision
论文作者
论文摘要
通过偏振$ e^-e^+$碰撞研究任意自旋两极化的振荡的产生。我们计算完全自旋分辨的横截面$ {\ rm d}σ_{e^-e^+\rightArrowμ^-μ^+} $，并利用蒙特卡洛二进制碰撞方法来描述muon对的生产和偏振过程。我们发现，由于混合螺旋度对散射角的依赖性，可以产生任意极化的哑光对，并可以产生与纵向和横向自旋成分的旋转。具有高度纵向极化和NC电荷的紧密准直的电子和正电子光束的碰撞可产生约40美元的$ 40 \％$ MUON对，具有纵向极化，约60美元\％$ $ MUON对带有横向极化。可以通过下一代激光 - plasma线性对撞机实现紧凑的高频率$ e^-e^+\rightArrowμ^-μ^+$ muon源，这对于促进基本物理和大区域的测量技术至关重要。
Generation of arbitrarily spin polarized muon pairs is investigated via polarized $e^-e^+$ collision. We calculate the fully spin-resolved cross section ${\rm d}σ_{e^-e^+\rightarrow μ^-μ^+}$ and utilize the Monte Carlo method of binary collision to describe the production and polarization processes of muon pairs. We find that, due to the dependence of mixed helicities on the scattering angle, arbitrarily polarized muon pairs with both of the longitudinal and transverse spin components can be produced. The collision of tightly collimated electron and positron beams with highly longitudinal polarization and nC charge can generate about $40\%$ muon pairs with longitudinal polarization and about $60\%$ muon pairs with transverse polarization. The compact high-flux $e^-e^+\rightarrowμ^-μ^+$ muon source could be implemented through the next-generation laser-plasma linear collider, and would be essential to facilitate the investigation of fundamental physics and the measurement technology in broad areas.
