Radiative corrections to chiral amplitudes in quasiperipheral kinematics

Chiral amplitudes for two-jet processes in quasiperipheral kinematics are calculated at the Born and one-loop correction levels. The amplitudes of subprocesses describing the interaction of a virtual and a real photon with the creation of a charged fermion pair for various chiral states are considered in detail. Similar results are presented for the Compton subprocess with a virtual photon. Contributions of the emission of virtual, soft, and hard real additional photons are explicitly taken into account. The relevant cross sections expressed in terms of impact factors are in agreement with the structure function approach in the leading logarithmic approximation. Contributions of the next-to-leading terms are represented in analytic form. Estimation of accuracy is discussed.