ee$\in$MC: Low Energy Mesons and the Residual QCD Potential

Abstract

The Flux-Tube Breaking Model in ee$\in$MC is expanded to include the residual QCD potential between the Final-State mesons, within the non-relativistic limit. These residual QCD potentials have been predicted in the context of the Flux-Tube Breaking Models to generate meson-meson molecular states for the $f_0(500)$, $f_0(980)$, $a_0(980)$, through the colour hyper-fine spin-spin interaction. These residual potentials are also found to have an important impact on the $S_1$ decay of the $a_1$ and $K_1$ axial-vector mesons due to the colour hyper-fine spin-spin interaction. It is found that in the low mass regions, the $\rho (770)$ and $K^{\ast }(892)$ are sensitive to the linear-confining potential and colour-Coulomb potential suggesting that with the high statistics at the B-Factories, it may be possible to probe the linear-confining potential and colour-Coulomb potential through a model dependent description of the resonance shape or by exploiting multiple production process.

Comments: 10 pages, 5 Figure and 2 Tables