Backward scattering of pions by nucleons

Effective functional form of Regge trajectories

“…where µ −1 = (0.9±0.2) fm = (4.56±1.01) GeV −1 , √ σ = 400 MeV and α = 0.21±0.01. We obtain bottomonium-like spectra by diagonalizing the Hamiltonian (3) with the potential (4). The number of bound states in the model is finite, and it decreases with increased screening µ.…”

“…[39] for a similar form of the ρ trajectory from the analysis of πN charge-exchange scattering data. 4 Earlier analysis of ref. [40] found T ρ = 2.4 ± 0.4 GeV.…”

“…Indeed, the straight line which crosses the ρ and ρ 3 squared masses corresponds to an intercept α ρ (0) = 0.48, whereas the physical intercept is located at 0.55, as discussed below. The nucleon Regge trajectory as extracted from the π + p backward scattering data is [4] α N (t) = −0.4 + 0.9 t + 1 2 0.25 t 2 ,…”

Deuteron photodisintegration, quark-gluon string model, and Regge phenomenology

“…Kaidalov has shown that the QGS model describes a large variety of experimental data on the exclusive and inclusive hadronic reactions at high energy very well [5,6,15]. However, due to the duality property of scattering amplitudes [13], this approach can also work in the intermediate-energy region [6].…”

Effect of color screening on heavy quarkonia Regge trajectories

“…In practice, since for each hadronic Regge trajectories at most only three lowest lying states are known[6], the observed Regge trajectories can be well approximated by the well-known linear form. Nevertheless, some experiments indicate a nonzero curvature, for example, the nucleon trajectory[7],…”