Measurement of the pion form factor at 640
1400 MeV
Kurdadze L. M., Lei'chuk M. Yu., Pakhtusova E. V., Sidorov V. A., Skrinskii A. N., Chilingarov A. G., Shatunov Yu. M., Shvarts B. A., Edel'man S. I.
The electromagnetic form factor of the pion has been measured over the energy range 64O-1400 MeV with the OLYa detector on the VEPP-2M storage ring in the reaction e+e~~>ir+rr". The characteristics of the ρ meson and of the ρ-ω interference have been found. At χ/ϊ > 1000 MeV the pion form factor cannot be described as the sum of ρ and ρ (1600) mesons.