Relativistic antihydrogen production by pair production with positron capture

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• 作者：M.Y. 艦engü ; l^a ; ^{melekaurora@yahoo.com} ; M.C. Gü ; ç ; lü ; ^b
• 关键词：Antihydrogen production ; Positron capture ; Monte Carlo calculations
• 刊名：Progress in Particle and Nuclear Physics
• 出版年：2012
• 期刊代码：64_01466410
• 类别：ph
• 出版时间：April, 2012
• 卷：67
• 期：2
• 页码：612-615
• 文件大小：224 K

摘要

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.