Infrared finitness and analyticity properties of the loop-loop   scattering amplitudes in gauge theories
  We shall discuss about the infrared finitness and some analyticity properties of the loop-loop scattering amplitudes in gauge theories, when going from Minkowskian to Euclidean theory, and we shall see how they can be related to the still unsolved problem of the s-dependence of the hadron-hadron total cross-sections. 
E. Meggiolaro