Matter–antimatter interactions involving antihydrogen

Low-energy scattering of antihydrogen by helium and molecular hydrogen

“…This value is a factor of ∼ 36 larger than in the case of H +H [7,22] and a factor of ∼ 2 larger than in the case of He +H [8,23]. This value is a factor of ∼ 36 larger than in the case of H +H [7,22] and a factor of ∼ 2 larger than in the case of He +H [8,23].…”

“…[8], it was possible to evaluate the integrals involved using two dimensional numerical integration. As pointed out in ref.…”

“…[8] we described preliminary calculations that we had carried out for the rearrangement reaction [8] we described preliminary calculations that we had carried out for the rearrangement reaction…”

“…In these calculations, rearrangement cross sections were obtained from the T -matrix for the reaction which was evaluated using a distorted wave approx-imation in which the exact scattering wave function was replaced by the wave function for the entrance channel, calculated using the Born-Oppenheimer approximation [9]. [8], calculations involving rearrangement processes are difficult to carry out as, in most cases, very different coordinates must be used to describe the entrance channel. [8], calculations involving rearrangement processes are difficult to carry out as, in most cases, very different coordinates must be used to describe the entrance channel.…”

“…[8], calculations involving rearrangement processes are difficult to carry out as, in most cases, very different coordinates must be used to describe the entrance channel. [8]. The method used to reduce the numerical integration in the evaluation of the T -matrix elements from nine to five dimensions is described in ref.…”