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arXiv · hep-th/9610214

Annihilation into Channels with Strangeness and the OZI Rule Violation

V. E. Markushin
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Abstract

Two-step mechanisms in the $N\bar{N}$ annihilation and their role in the OZI rule violating reactions are discussed. In particular the two meson rescattering mechanism for $πϕ$ channel including all off-shell effects is typically two orders of magnitude bigger than the OZI tree level expectation and explains the observed ratio $ϕπ/ωπ$ in the annihilation at rest. The rates for the final states including photons, $γω$ and $γϕ$, can be explained in the vector dominance model. The observed rate for $p\bar{p}\toγω$ is suppressed due to destructive interference between the intermediate $ρ$ and $ω$ states while the interference in $p\bar{p}\toγϕ$ is required to be constructive leading to a large ratio $γϕ/γω$.

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V. E. Markushin. 1996-10-28. Annihilation into Channels with Strangeness and the OZI Rule Violation. https://doi.org/10.1016/s0920-5632(97)00292-2

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