Scalar $a_0(980)$ meson in $ϕ\to π^{0}ηγ$ decay
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We study the radiative decay $ϕ\toπ^{0}ηγ$ within the framework of a phenomenological approach in which the contributions of $ρ$-meson, chiral loop and $a_0$-meson are considered. We analyze the interference effects between different contributions and utilizing the experimental branching ratio and invariant $π^0η$ mass spectrum for $ϕ\toπ^{0}ηγ$ decay we estimate the branching ratio of $ϕ\to a_0γ$ decay.
18 pages, RevTeX, 6 PS figures. A rounding-off error in printing the horizontal axes of figures resulting from the computer program Grapher is corrected. Journal Ref.: J. Phys. G: Nucl. Part. Phys. 28 (2002) 2783-2793
18 pages, RevTeX, 6 PS figures. A rounding-off error in printing the horizontal axes of figures resulting from the computer program Grapher is corrected. Journal Ref.: J. Phys. G: Nucl. Part. Phys. 28 (2002) 2783-2793