Production of scalar $K\bar K$ molecules in $φ$ radiative decays

Details Production of scalar $K\bar K$ molecules in $φ$ radiative decays Production of scalar $K\bar K$ molecules in $φ$ radiative decays

1996-05-07

arxiv.org/abs/hep-ph/9605245v1

Phys.Rev.D56:203-211,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, revtex, 4 eps files of figures

Scientific paper

10.1103/PhysRevD.56.203

The potentialities of the production of the scalar $K\bar K$ molecules in the $\phi$ radiative decays are considered beyond the narrow resonance width approximation. It is shown that $BR(\phi\rightarrow\gamma f_0(a_0)\rightarrow\gamma\pi\pi(\pi\eta))\approx (1\div 2)\times 10^{-5}\ ,\BR(\phi\rightarrow\gamma (f_0+a_0)\rightarrow\gamma K^+K^-)\alt 10^{-6}$ and $BR(\phi\rightarrow\gamma (f_0+a_0) \to \gamma K^0\bar K^0)\alt 10^{-8}$. The mass spectra in the $\pi\pi\ ,\ \pi\eta\ ,\ K^+K^-\ ,\ K^0\bar K^0$ channels are calculated. The imaginary part of the amplitude $\phi\rightarrow\gamma f_0(a_0)$ is calculated analytically. It is obtained the phase of the scalar resonance production amplitude that causes the interference patterns in the reaction $e^+e^-\rightarrow\gamma \pi^+\pi^-$ in the $\phi$ meson mass region.

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