Matter distribution inπ±andK±and possible universality of meson form factors

Analysis of the Fermi National Accelerator Laboratory 200-GeV meson-proton elastic scattering data based on the geometrical picture leads to predictions for the matter distribution in ${\pi }^{\pm }$ and $K^{\pm }$. The result suggests that form factors for these particles are essentially identical. At higher incident energies, form factors calculated from the model will remain fixed, while the effective blackness for the particles increases.