Truncated Balitskii-Fadin-Kuraev-Lipatov series and hadronic collisions - art. no. 094018

We study the contribution of a truncated Balitskii-Fadin-Kuraev-Lipatov Pom eron series to the hadronic processes showing that a reliable description i s obtained using two orders in perturbation theory. The pp(p (p) over bar) total cross sections are described with good agreement, consistent with the unitarity bound. We also calculate the elastic-scattering amplitude at non zero momentum transfer t, introducing two distinct Ansatze for the proton i mpact factor. As a by product the elastic differential cross section is obt ained at the small t approximation and compared with the data, describing w ith good agreement this observable for both low- and high-energy values.