[en] It is shown that, as in the case of light mesons, heavy-quarkonium states lie, to a high precision, on Regge trajectories in the (n, M²) and (M², J) planes with a universal slope. Specifically, cc-bar states are described to a high precision by linear trajectories. For bb-bar states, there is no such linearity but, as in the other cases, there is a universal quantum-number dependence of the trajectory

[en] The existence of a Regge trajectory γ=α/3-1 in the eight-point amplitude of the Dual Resonance Model is demonstrated. It is suggested that the three presently known trajectories α, β and γ are part of an infinite set of 'sister' trajectories, the expected properties of which are discussed. (Auth.)

[en] We consider an extremal three-point correlator of three heavy vertex operators for the circular winding string state with one large spin and one winding number in AdS₅ and one large spin and one winding number in S⁵. We use a Schwarz-Christoffel transformation to compute semiclassically the extremal three-point correlator on a stationary string trajectory which is mapped to the complex plane with three punctures. It becomes a 4d conformal invariant three-point correlator on the boundary. We discuss the marginality condition of vertex operator.

No abstract available

[en] We report an odderon Regge trajectory emerging from a field theoretical Coulomb gauge QCD model for the odd signature J^PC (P=C=-1) glueball states. The trajectory intercept is clearly smaller than the Pomeron and even the ω trajectory's intercept which provides an explanation for the nonobservation of the odderon in high energy scattering data. To further support this result we compare to glueball lattice data and also perform calculations with an alternative model based upon an exact Hamiltonian diagonalization for three constituent gluons

No abstract available

No abstract available

[en] Published in summary form only

[en] The Regge trajectory of a dyon potential is studied with results that there exist resonances for angular momentum greater than lh, with a half width of linear energy dependence. A branch cut is shown to occur in the complex angular momentum plane of the scattering amplitude. (author)

[en] Simulation by random sampling of the multiple Coulomb scattering and energy degradation of fast electrons is concerned, for the purpose of solving the electron transport problems arising in radiometrical system design. A procedure is developed, to simulate electron trajectory by taking into account the combined effect of many collisions, produced during a macroscopic step of energy degradation. (author)