Relativistic antihydrogen production |
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| Authors: | H. Meier Z. Halabuka K. Hencken D. Trautmann G. Baur |
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| Affiliation: | Institut für Physik der Universit?t Basel, CH-4056 Basel, Switzerland, CH
Institut für Kernphysik (Theorie), Forschungszentrum Jülich, D-52425 Jülich, Germany, DE
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| Abstract: | Antihydrogen has recently been produced in collisions of antiprotons with ions. While passing through the Coulomb field of a nucleus an antiproton will create an electron-positron pair. In rare cases the positron is bound by the antiproton and an antihydrogen atom produced. We calculate the production of relativistic antihydrogen atoms by bound-free pair production. The cross section is calculated in the semiclassical approximation (SCA), or equivalently in the plane wave Born approximation (PWBA) using exact Dirac-Coulomb wave functions. We compare our calculations to the equivalent photon approximation (EPA). Received: 19 December 1997 / Published online: 10 March 1998 |
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