Speaker
Description
Unitarity imposes strict bounds on elastic and inelastic partial-wave cross sections. However, state-of-the-art calculations, motivated by dark-matter phenomenology, can exhibit substantial violations of partial-wave unitarity, with potentially significant consequences for phenomenological predictions.
In this talk, I present a new, model-independent formalism that restores unitarity through the consistent resummation of inelastic contributions to the self-energy of the incoming state. This framework provides a systematic and internally consistent treatment of inelastic effects. I will illustrate its implementation in existing bound-state-formation calculations, demonstrating how unitarity is recovered in regimes where existing calculations break down. The method is broadly applicable and has implications for dark-matter freeze-out, indirect detection, and self-interactions.
| Main Contribution topic | Theory / Phenomenology |
|---|---|
| Secondary contribution topic | Cosmology Dark Matter |