Structure functions as resulted from classical bremsstrahlung in the field of ultrarelativistic dipoles

Abstract

The relevance of the dipole configurations of quarks in forming nucleus structure functions is discussed. It is shown that radiation generated by dipole configurations while moving relativistically along their axes is described by distributions which are finite and infrared stable in a low transverse momentum region. It is argued that there is an exponential transition to the perturbativelike behavior at large transverse momenta and its rate is defined by the distance between the dipole charges in its rest frame.