亚开尔文温度下的反质子-氢湮灭
Antiproton-Hydrogen annihilation at sub-kelvin temperatures
摘要：
研究了超低能反质子（$% E\le10^{-6}$ a.u.）氢原子的存在。它们包括弹性和非弹性截面和质子（Pn）形成谱。逆俄歇过程（$Pn+e \to H+\bar{p}$）考虑在一个单一的耦合通道模型的框架。湮灭截面被发现是几倍小于黑球吸收模型的预测。预测了一族$\bar{p}H$近阈亚稳态。分析了这种近阈值S-矩阵奇异性的位置上的Proximity形成概率的依赖关系。得到了$H\bar{H}$湮没截面的估计。
英文摘要：
The main properties of the interaction of ultra low-energy antiprotons ($% E\le10^{-6}$ a.u.) with atomic hydrogen are established. They include the elastic and inelastic cross sections and Protonium (Pn) formation spectrum. The inverse Auger process ($Pn+e \to H+\bar{p}$) is taken into account in the framework of an unitary coupled-channels model. The annihilation cross-section is found to be several times smaller than the predictions made by the black sphere absorption models. A family of $\bar{p}H$ nearthreshold metastable states is predicited. The dependence of Protonium formation probability on the position of such nearthreshold S-matrix singularities is analysed. An estimation for the $H\bar{H}$ annihilation cross section is obtained.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
