Deck Model for Triple-Regge Couplings

Inclusive cross sections in the triple-Regge region are calculated using a version of the Amati-Bertocchi-Fubini-Stanghellini-Tonin (ABFST) multiperipheral model that amounts to an extension of the Deck model. Even though almost no parameters are available for adjustment, presently available moderate-energy data are described in a qualitatively satisfactory manner. Predictions are made for future experiments at higher energies, and the various triple-Regge couplings are extracted from the model. It is found that vertices corresponding to high-lying trajectories are suppressed. In particular the dimensionless parameter ${\eta }_{\mathrm{PPP}}$ that characterizes the triple-Pomeranchon vertex turns out to be ≲ ${10}^{-3\mathrm{}}$.