Electron-Positron Annihilation into Hadron-Antihadron Pairs

Details Electron-Positron Annihilation into Hadron-Antihadron Pairs Electron-Positron Annihilation into Hadron-Antihadron Pairs

2004-09-06

arxiv.org/abs/hep-ph/0409051v2

Phys.Rev.C71:025204,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 6 figures

Scientific paper

10.1103/PhysRevC.71.025204

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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