2018 Impact factor 4.843
Particles and Fields
Eur. Phys. J. C 5, 287-291
DOI 10.1007/s100529800847

Relativistic antihydrogen production

H. Meier1 - Z. Halabuka1 - K. Hencken1 - D. Trautmann1 - G. Baur2

1 Institut für Physik der Universität Basel, CH-4056 Basel, Switzerland
2 Institut für Kernphysik (Theorie), Forschungszentrum Jülich, D-52425 Jülich, Germany

Received: 19 December 1997 / Published online: 10 March 1998

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).


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