Nonperturbative gluon exchange in $pp$ elastic scattering at TeV energies

Abstract

We investigate the two-gluon-exchange model of the Pomeron using nonperturbative gluon propagators characterized by a dynamical mass scale. We present the results for an analysis of the available $pp$ differential cross section data at TeV energies which accounts for dynamical gluon masses obtained from a non-linear version of the Schwinger-Dyson equations. We show that our two-gluon exchange model gives a very good description of the LHC data, provided we demand the Reggeization of the scattering amplitude and make a suitable choice for the convolution of proton wave functions.

Comments: 9 pages, 6 figures, 2 tables, text improved, references added. Version to be published in Phys. Rev. D