Laplace method for the diagrams of elastic scattering in the model of multiparticle fields

In this paper we show how the differential cross-section of elastic proton scattering can be calculated from the square of the transmitted four-momentum using the model of multiparticle fields. We consider a single-loop diagram and the corresponding analytical expression for this loop. This expression contains a multidimensional integral over virtual four-momentum, which we calculate using the Laplace method. These multidimensional integrals were reduced to two-dimensional or one-dimensional and then were calculated numerically. A qualitative correspondence of the differential cross section to the experimental data is obtained. Achieving a quantitative match with the experiment requires taking into account more loop diagrams.