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We calculate the omega --> pi0 gamma* and phi --> pi0 gamma* electromagnetictransition form factors based on dispersion theory, relying solely on aprevious dispersive analysis of the corresponding three-pion decays and thepion vector form factor. We compare our findings to recent measurements of theomega --> pi0 mu+ mu- decay spectrum by the NA60 collaboration, and stronglyencourage experimental investigation of the Okubo-Zweig-Iizuka-forbidden phi--> pi0 l+ l- decays in order to understand the strong deviations fromvector-meson dominance found in these transition form factors.

omega --> pi0 gamma* and phi --> pi0 gamma* Transition form factors in dispersion theory