Electron-Positron Annihilation into Hadron-Antihadron Pairs
High Energy Physics - Phenomenology
2008-11-26 v2
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.
Keywords
Cite
@article{arxiv.hep-ph/0409051,
title = {Electron-Positron Annihilation into Hadron-Antihadron Pairs},
author = {Y. Yan and C. Kobdaj and P. Suebka and Z. M. Zheng and Amand Faessler and Th. Gutsche and V. E. Lyubovitskij},
journal= {arXiv preprint arXiv:hep-ph/0409051},
year = {2008}
}
Comments
15 pages, 6 figures