May 17 – 20, 2021
online via ZOOM
Europe/Warsaw timezone

Bound states in the three-body scattering formalisms

May 19, 2021, 6:25 PM
20m
online via ZOOM

online via ZOOM

Speaker

Sebastian Dawid (Indiana University Bloomington)

Description

Strong interactions produce a rich spectrum of resonances which decay into three or more hadrons. Understanding their phenomenology requires a theoretical framework to extract parameters from experimental data and lattice QCD simulations of hadron scattering. Two classes of relativistic three-body approaches are currently being pursued: the EFT-based and unitarity-based one. We consider a model of relativistic three-body scattering with an S-wave bound state in the two-body sub-channel using both formalisms. We present and discuss numerical solutions for the multi-hadron scattering amplitudes in different kinematical regions, obtained from integral equations of the EFT-based approach. We also show how to generalize the unitarity-based framework to include all relevant open channels, discuss the nonphysical singularities near the physical region, and propose how to eliminate them.

Primary author

Sebastian Dawid (Indiana University Bloomington)

Co-authors

Prof. Adam Szczepaniak Prof. Raúl Briceño Connor McCarty Md Habib E Islam Andrew Jackura

Presentation materials