Resonance production and inclusive cross-sections in dual models

The authors compute numerically the contribution to inclusive spectra of produced intermediate resonances through the discontinuity of one- loop dual amplitudes. They find these contributions to be smaller but not negligible as compared to those coming from tree graphs. Scaling may be reached for loop diagrams at higher energies than trees. The cut-off in transverse momentum is preserved even for rather heavy intermediate produced resonances. They argue that this fact is related with strong polarization effects in the decay of resonances in the dual model. (9 refs).