a A.F. Ioffe Physico-Technical Institute, 194021 St. Petersburg, Russia
b St. Petersburg Institute of Nuclear Physics, 188350 St. Petersburg, Gatchina, Russia
Abstract:
The asymptotic behaviour of the electromagnetic form factors of the electron and quark is obtained in the double-logarithmic approximation for Sudakov kinematics, i.e., for the case that the value of the momentum transfer is much greater than the mass of the particle.