Relativistic antihydrogen production by pair production with positron capture

Antihydrogen atoms may rarely be produced by the collision of antiprotons with ions. At relativistic velocities, the antiproton may pass around the Coulomb field of the nucleus and the electron–positron pairs can be produced electromagnetically. After this pair production, not so often, positron can...

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Bibliographic Details
Published inProgress in particle and nuclear physics Vol. 67; no. 2; pp. 612 - 615
Main Authors Şengül, M.Y., Güçlü, M.C.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.04.2012
Subjects
Antihydrogen production
Monte Carlo calculations
Positron capture
Monte Carlo calculations
Antihydrogen production
Positron capture
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Summary:Antihydrogen atoms may rarely be produced by the collision of antiprotons with ions. At relativistic velocities, the antiproton may pass around the Coulomb field of the nucleus and the electron–positron pairs can be produced electromagnetically. After this pair production, not so often, positron can be captured by the antiproton and as a result, antihydrogen atoms may be produced. In this work, we have calculated the antihydrogen production cross section in the framework of perturbation theory, by applying Monte-Carlo integration techniques. In order to compute the lowest-order Feynman diagrams amplitudes, we used Darwin wave functions for the bound states of the positrons and Sommerfeld–Maue wave functions for the continuum states of the electrons.
ISSN:0146-6410
1873-2224
DOI:10.1016/j.ppnp.2012.01.037