The possibility that the triple-Pomeron coupling vanishes at q_t=0

Abstract

We study the case when the triple-Pomeron vertex is assumed to have a vectorial form, that is, the amplitude of high-mass diffractive dissociation vanishes as $V\propto {\vec{q}}_t\cdot \vec{e}$ as $q_t\to 0$. We find that the available data in the triple-Reggeon region may be well described in such a `weak' coupling scenario, providing that absorptive effects are taken into account. We compare this weak (vector) coupling scenario with the strong and weak (scalar) coupling scenarios. Corresponding predictions are presented for an LHC energy of 14 TeV.

arXiv comment13 pages, 6 figures

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• Nonperturbative gluon exchange in $pp$ elastic scattering at TeV energies
• Inelastic cross sections, overlap functions and Cq moments from ISR to LHC energies in proton interactions
• Soft Pomeron in light of the LHC correlated data