The N and Δ_δ trajectories in the triple-regge limit

Summary

We study the form of the N and Δ_δ trajectories using the triple-Regge kinematic-limit formalism for the inclusive reactions pp → π⁺X⁺, pp → π^-X⁺⁺⁺, π^-p → pX and π^-p → X⁰n. We find that the first two reactions give very low-lying N and Δ_δ trajectories, whereas the last two reactions give very high-lying N and Δ_δ trajectories, compared to the trajectories given by the Chew-Frautschi plot. We conclude that with the existing experimental information the study of the above reactions relies very much duality arguments.