English

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

High Energy Physics - Phenomenology 2010-11-15 v1

Abstract

The potentialities of the production of the scalar KKˉK\bar K molecules in the ϕ\phi radiative decays are considered beyond the narrow resonance width approximation. It is shown that BR(ϕγf0(a0)γππ(πη))(1÷2)×105 ,\BR(ϕγ(f0+a0)γK+K)\alt106BR(\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(ϕγ(f0+a0)γK0Kˉ0)\alt108BR(\phi\rightarrow\gamma (f_0+a_0) \to \gamma K^0\bar K^0)\alt 10^{-8}. The mass spectra in the ππ , πη , K+K , K0Kˉ0\pi\pi\ ,\ \pi\eta\ ,\ K^+K^-\ ,\ K^0\bar K^0 channels are calculated. The imaginary part of the amplitude ϕγf0(a0)\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+eγπ+πe^+e^-\rightarrow\gamma \pi^+\pi^- in the ϕ\phi meson mass region.

Keywords

Cite

@article{arxiv.hep-ph/9605245,
  title  = {Production of scalar $K\bar K$ molecules in $\phi$ radiative decays},
  author = {N. N. Achasov and V. V. Gubin and V. I. Shevchenko},
  journal= {arXiv preprint arXiv:hep-ph/9605245},
  year   = {2010}
}

Comments

19 pages, revtex, 4 eps files of figures