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arXiv · hep-ph/9812294

Loop Calculations and OZI Rule

V. E. Markushin
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Abstract

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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V. E. Markushin. 1998-12-09. Loop Calculations and OZI Rule. https://doi.org/10.1016/s0375-9474(99)00200-6

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