Numerical Regge pole analysis of resonance structures in state-to-state reactive differential cross sections

A single resonance Regge pole dominates the forward-angle scattering of the state-to-state F + H2 → FH + H reaction at Etrans = 62.09 meV

“…It is known, from many TRI pole computations, 60,[67][68][69][70]83,84,91,92,[99][100][101][102] that an elliptical curve approximately separates the stable and unstable regions. The greendashed ellipses in Fig.…”