Loop Calculations and OZI Rule

Details Loop Calculations and OZI Rule Loop Calculations and OZI Rule

1998-12-09

arxiv.org/abs/hep-ph/9812294v1

Nucl.Phys. A655 (1999) 185-190

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, LaTeX, axodraw, 2 PostScript figures, submitted to Nuclear Physics A

Scientific paper

10.1016/S0375-9474(99)00200-6

The role of two step mechanisms in the OZI rule violation in NNbar annihilation at low energies is reviewed. The full calculation of two-meson doorway mechanisms shows that the off-mass-shell contributions are important. Moreover, for the (phi pi0) and (phi rho) annihilation channels three-meson doorway contributions are non-negligible and improve agreement with the data. A significant enhancement of phi production is found in the resonant rescattering mechanisms p pbar -> pi+ pi- K Kbar -> pi+ pi- phi and p pbar -> eta K Kbar -> eta phi.

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