Study $\gamma \gamma \to {\tau }^{+}{\tau }^{-}$ process including ${\tau }^{+}{\tau }^{-}$ spin information in Pb-Pb ultraperipheral collision and at Lepton collider

Peng-Cheng Lu, Zong-Guo Si, Han Zhang +1

We study the $\gamma \gamma \to {\tau }^{+}{\tau }^{-}$ process including full ${\tau }^{+}{\tau }^{-}$ spin information in Pb--Pb ultraperipheral collision and at lepton colliders. We present the predictions for the corres…