标题： 光子-光子散射测量提案 显示英文标题

标题： A Proposal to Measure Photon-Photon Scattering

摘要： 我们从理论角度讨论了在低能量下测量光子-光子散射截面的可能性。 低能量下光子-光子散射截面可以表示为 $\displaystyle{{d\sigma\over d\Omega} \simeq {\alpha^4\over (12\pi)^2 \omega^2} (3+2\cos^2\theta +\cos^4\theta)}$，其中$\omega$是光子的能量。 在$\omega \simeq 1$电子伏特时，该截面的大小应该比海森堡和欧拉基于场论的经典图像计算出的光子散射预测值大$10^{37}$倍。 由于光子-光子反应过程初始条件的困难，我们建议首先在几兆电子伏特时测量$\gamma +\gamma \rightarrow e^++e^- $反应，然后再测量$\gamma +\gamma \rightarrow \gamma +\gamma $弹性散射。 显示英文摘要

摘要： We discuss a possibility to measure the photon-photon scattering cross section at low energy in a theoretical standpoint. The cross section of photon-photon scattering at low energy can be written as $\displaystyle{{d\sigma\over d\Omega} \simeq {\alpha^4\over (12\pi)^2 \omega^2} (3+2\cos^2\theta +\cos^4\theta)}$ with $\omega$ the energy of photon. The magnitude of the cross section at $\omega \simeq 1$ eV should be $10^{37}$ times larger than the prediction of Heisenberg and Euler who calculated the photon scattering by the classical picture of field theory. Due to a difficulty of the initial condition of photon-photon reaction process, we propose to first measure $\gamma +\gamma \rightarrow e^++e^- $ reaction at a few MeV before measuring $\gamma +\gamma \rightarrow \gamma +\gamma $ elastic scattering.