Antiproton-Hydrogen and Antihydrogen-Hydrogen annihilation at sub-kelvin temperatures
Cross sections of ultra low-energy antiprotons (E ≤ 10-6 a.u.) and antihydrogen with atomic hydrogen are calculated within a quantum mechanical coupled channels approach. The results differs from the extrapolations of semiclassical models. The main features of the observables are found to be determined by a family of pH, HH nearthreshold metastable states.
KeywordsPolarization Potential Annihilation Cross Section Virtual State Semiclassical Model Couple Channel Model
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