axial vector mesons 1COMPASS experiment 1coupled-channel analysis 1three-body scattering 1triangle singularity 1
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hep-ph2026
The in a Unitary Coupled-Channel Three-Body Approach
Ajay S. Sakthivasan, Yuchuan Feng, Michael Döring +1
The paper develops a unitary three‑body coupled‑channel model that incorporates triangle‑singularity effects to describe the narrow enhancement near 1.42 GeV observed in COMPASS da…
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…