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Electron-Positron Annihilation into Hadron-Antihadron Pairs

Y. Yan·C. Kobdaj·P. Suebka·Z. M. Zheng·Amand Faessler·Th. Gutsche·V. E. Lyubovitskij
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Abstract

The reactions of electron-positron to nucleon-antinucleon pairs are studied in a non-perturbative quark model. The work suggests that the two-step process, in which the primary quark-antiquark pair forms first a vector meson which in turn decays into a hadron pair, is dominant over the one-step process in which the primary quark-antiquark pair is directly dressed by additional quark-antiquark pairs to form a hadron pair. To reproduce the experimental data of the reactions of electron-positron to proton-antiproton and electron-positron to neutron-antineutron a D-wave omega-like vector meson with a mass of around 2 GeV has to be introduced.

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Y. Yan, C. Kobdaj, P. Suebka, Z. M. Zheng, Amand Faessler, Th. Gutsche, V. E. Lyubovitskij. 2004-12-28. Electron-Positron Annihilation into Hadron-Antihadron Pairs. https://doi.org/10.1103/physrevc.71.025204

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