axial vector mesons 1COMPASS experiment 1coupled-channel analysis 1three-body scattering 1triangle singularity 1
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hep-ph2024
Effects of Final State Interactions on Landau Singularities
Ajay S. Sakthivasan, Maxim Mai, Akaki Rusetsky +1
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 h…
nucl-th2024
A unitary coupled-channel three-body amplitude with pions and kaons
Yuchuan Feng, Fernando Gil, Michael Döring +4
Three-body dynamics above threshold is required for the reliable extraction of many amplitudes and resonances from experiment and lattice QCD. The S-matrix principle of unitarity c…