pbarp and pp Elastic Scattering in a Multipole-Pomeron Model
  We assume that the Pomeron is a sum of Regge multipoles, each corresponding to a finite gluon ladder. From a fit to the diffraction cone data of pp- and pbarp- scattering we found that the triple pole is significant for the rise of the ratio sigma_el/sigma_tot at high energies. 
K. Kontros, A. Lengyel, Z. Tarics