The European Physical Journal C

ISSN: 1434-6044 (printed version)
ISSN: 1434-6052 (electronic version)

Table of Contents

Abstract Volume 5 Issue 2 (1998) pp 287-291
DOI 10.1007/s100529800847

theoretical physics:
Relativistic antihydrogen production

H. Meier (1), Z. Halabuka (1), K. Hencken (1), D. Trautmann (1), G. Baur (2)

(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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Online publication: August 25, 1998
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