Effects of final state interactions on Landau singularities

Abstract

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.

Keywords

• Nonperturbative Effects
• Effective Field Theories
• Effective Field Theories of QCD
• Specific QCD Phenomenology