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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
; | Date: |
6 Sep 2004 | Journal: | Phys.Rev. C71 (2005) 025204 | Subject: | hep-ph | 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. | Source: | arXiv, hep-ph/0409051 | Services: | Forum | Review | PDF | Favorites |
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