Low-temperature antihydrogen-atom scattering

Details Low-temperature antihydrogen-atom scattering Low-temperature antihydrogen-atom scattering

2005-12-20

arxiv.org/abs/physics/0512188v1

Physics

Atomic Physics

9 pages, 2 figures, to be published in Nuclear Instruments and Methods B

Scientific paper

10.1016/j.nimb.2006.01.050

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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