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Low-temperature antihydrogen-atom scattering

S Jonsell
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Abstract

A simple method to include the strong force in atom-antiatom scattering is presented. It is based on the strong-force scatteringn length between the nucleon and antinucleon. Using this method elastic and annihilation cross sections are calculated for hydrogen-antihydrogen and helium-antihydrogen scattering. The results are compared to first-order perturbation theory using a pseudo potential. The pseudo-potential approach works fairly well for hydrogen-antihydrogen scattering, but fails for helium-antihydrogen scattering where strong-force effects are more prominent.

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S Jonsell. 2005-12-20. Low-temperature antihydrogen-atom scattering. https://doi.org/10.1016/j.nimb.2006.01.050

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