We calculate the s-wave strong interaction Λπ phase shift at the Ξ mass taking into account contributions from the 21− and 23−Σ resonances. We find the S-wave phase shift to be small, of the order of 0.3 degrees and bounded by 0.5 degrees.
Cite
@article{arxiv.hep-ph/9409384,
title = {S-wave phase shift in Lambda-pi scattering},
author = {Alakabha Datta and Sandip Pakvasa},
journal= {arXiv preprint arXiv:hep-ph/9409384},
year = {2015}
}