the energy. As usual, the asymmetry is defined as the difference between the forward and the backward scattering amplitudes over the sum of them. These amplitudes were calculated in Ref. [@egt] in DLA, by introducing and solving the Infrared Evolution Equations (IREE). This method is a very simple and the most efficient instrument for performing all-orders double-logarithmic calculations (see Ref. [@flmm] and Refs. therein). In particular, when it was applied in Ref. [@flmm] to calculate the electroweak Sudakov (infrared-divergent) logarithms, it led easily to the proof of the exponentiation of the Sudakov logarithms. At that moment this was in contradiction to the non-exponentiation claimed in Ref. [@pciaf] and obtained by other means. This contradiction provoked a large discussion about the exponentiation. The exponentiation was confirmed eventually by the two-loop calculations in Refs. [@me]-[@dp] and by summing up the higher loop DL contributions in Refs. [@kp] and [@m]. These Sudakov logarithms provide the whole set of DL contributions to the $2 \to 2$ amplitudes only when the process is considered in the hard kinematic region where all the Mandelstam variables $s,t,u$ are of the same order. On the other hand, when the kinematics of the $2 \to 2$ processes is of 