English

Linear Sigma Model predictions for V->Sgamma and S->Vgamma decays

High Energy Physics - Phenomenology 2008-12-18 v2 High Energy Physics - Experiment

Abstract

The radiative decays VSγV\to S\gamma and SVγS\to V\gamma with V=ρ,ω,ϕV=\rho, \omega, \phi and S=a0,σ,f0S=a_0, \sigma, f_0 are calculated within the framework of the Linear Sigma Model. Current experimental data on the ϕf0γ\phi\to f_0\gamma and ρσγ\rho\to\sigma\gamma branching ratios and the ratio Γ(ϕf0γ)/Γ(ϕa0γ)\Gamma(\phi\to f_0\gamma)/\Gamma(\phi\to a_0\gamma) are satisfactorily accommodated in our approach. We also estimate the decay widths of the f0,a0ργ,ωγf_0,a_0\to\rho\gamma,\omega\gamma transitions. All the processes considered are of interest for ongoing experimental programs in Frascati, J\"ulich and Novosibirsk.

Keywords

Cite

@article{arxiv.0806.3007,
  title  = {Linear Sigma Model predictions for V->Sgamma and S->Vgamma decays},
  author = {R. Escribano and P. Masjuan and J. Nadal},
  journal= {arXiv preprint arXiv:0806.3007},
  year   = {2008}
}

Comments

A comment on vector meson loops added. 2 references added. Typos corrected. Accepted for publication in Physics Letters B