论文标题
{\ tt ee $ \ in $ mc}：生产$ \ bf e^{+} e^{+} e^{ - } \ toτ^{+}τ^{ - }（γ）$事件的任意初始旋转状态以及对旋转相关的影响
{\tt ee$\in$MC}: Arbitrary Initial Spin States for the Production of $\bf e^{+}e^{-} \to τ^{+}τ^{-} (γ) $ Events and the Impact on Spin Correlations
论文作者
论文摘要
我们提出了一种修改的自旋算法，包括旋转相关性，该算法已在$ e^{+} e^{+} e^{+} e^{ - } \ toτ^{+}τ{+}τ^{ - }（ - }（γ）$事件具有任意初始旋转配置的事件。该算法适用于提议的Belle-II极化升级到SuperKekB，无论是理想情况还是存在未对准，辐射效应并允许改变极化条件的情况。旋转$ 1/2 $状态的偏光梁状态是根据对应于偏振矢量对应的螺旋性状态的叠加来构建的，这些状态与偏光射线相对应，该状态描述了描述整体光束偏振的旋转状态，并通过修改的Altrelli-Parsis密度函数中的初始状态以及螺态状态的更改来实现。
We present a modified spin algorithm, including spin correlations, which has been implemented in {\tt ee$\in$MC} for the simulation of $e^{+}e^{-} \to τ^{+}τ^{-} (γ)$ events with an arbitrary initial spin configuration. This algorithm is suitable for the proposed BELLE-II polarization upgrade to SuperKEKB, both for the ideal case and for the case where there are misalignments, radiative effects and allows for changing polarization conditions. The spin $1/2$ states of the polarized beams are constructed in terms of a super-positioning of the helicity states corresponding to the polarimetric-vector describing the overall beam polarization and implemented both through a modification of the initial state in the modified Altrelli-Parsis Density Function as well as a change of basis of the helicity states.
