Effects of Final State Interactions on Landau Singularities

Ajay S. Sakthivasan , Maxim Mai , Akaki Rusetsky , Michael D\"oring

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classification ✦ hep-ph hep-exhep-latnucl-th

keywords effectslandausingularitiesachievedapplyingargumentscertainconfigurations

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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.

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