π-π scattering in the SU2 σ model
We explore the freedom of choosing subtraction points in the renormalizable σ model of π→ and σ. Phase shifts are computed from Padé approximants in the one-loop approximation. Comparisons are made with a previous calculation and an SU3 σ-model calculation. The phase of the scalar form factor of the pion is presented. © 1974 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review D
Chan, L., & Haymaker, R. (1974). π-π scattering in the SU2 σ model. Physical Review D, 10 (12), 4170-4176. https://doi.org/10.1103/PhysRevD.10.4170