Effects of Final State Interactions on Landau Singularities
arXiv:2407.17969 · doi:10.1007/JHEP10(2024)246
Abstract
In certain kinematic and particle mass configurations, triangle singularities may lead to line-shapes which mimic the effects of resonances. This well-known effect is scrutinized here in the presence of final-state rescattering. The goal is achieved first by utilizing general arguments provided by Landau equations, and second by applying a modern scattering formalism with explicit two- and three-body unitarity.
22 pages, 13 figures, revised version