Pipit: A momentum space optical potential code for pions

Title of program: PIPIT Catalogue Id: ABIH_v1_0 Nature of problem Angular distributions for the elastic scattering of pions are generated by summing a partial wave series. The elastic T-matrix elements for each partial wave are obtained by solving a relativistic Lippmann- Schwinger equation in momentum space using a matrix inversion technique. The Coulomb interaction is included essentially exactly using the method of Vincent and Phatak. The piN amplitude is obtained from phase shift information on-shell and incorporates a separable off-shell form factor to en ... Versions of this program held in the CPC repository in Mendeley Data ABIH_v1_0; PIPIT; 10.1016/0010-4655(76)90072-2 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)