A Numerical Analysis to the {$\pi$} and {K} Coupled--Channel Scalar Form-factor

Abstract

A numerical analysis to the scalar form-factor in the $\pi \pi$ and KK coupled--channel system is made by solving the coupled-channel dispersive integral equations, using the iteration method. The solutions are found not unique. Physical application to the $\pi \pi$ central production in the $pp\to pp\pi \pi$ process is discussed based upon the numerical solutions we found.

Comments: 8 pages, Latex, 3 figures. Minor changes and one reference added