Experimental constraint on the $\rho -$ meson form factors in the   time--like region
  The annihilation reaction $e^++e^-\rightarrow \bar \rho+\rho $ is considered. The constraint on time-like $\rho$-meson form factors from the measurement done by the BaBar collaboration at $\sqrt{s}=10.5$ GeV is analyzed. 
A. Dbeyssi, E. Tomasi-Gustafsson, G. I. Gakh and C. Adamuscin
hep-ph nucl-th