Radiative decays: a new flavour filter

Abstract

Radiative decays of the $1^3D_1$ orbital excitations of the $ρ$, $ω$ and $ϕ$ to the scalars $f_0(1370)$, $f_0(1500)$ and $f_0(1710)$ are shown to provide a flavour filter, clarifying the extent of glueball mixing in the scalar states. A complementary approach to the latter is provided by the radiative decays of the scalar mesons to the ground-state vectors $ρ$, $ω$ and $ϕ$. Discrimination among different mixing scenarios is strong.

12 pages, 1 table, 0 figures