Speaker
Sasa Prelovsek
(University of Ljubljana)
Description
I will present how the DD scattering amplitude and the pole positions in Tcc channel vary with the charm and the light-quark masses. This will be based on our lattice results for five charm quark masses and results by other groups for various light-quark mass. Effective Field Theory for DD interaction mediated by pions implies attraction at short range and a slight repulsion at long range mediated by one-pion exchange for mpi > mD*-mD. The pion exchange manifests as a left-hand cut in the partial wave projected scattering amplitude, which is accounted for in our analysis. Tcc pole transitions between a resonance, virtual and bound state as charm and light quark masses are varied.
Primary author
Sasa Prelovsek
(University of Ljubljana)
Co-authors
Alexey Nefediev
(Jozef Stefan Institute)
Padmanath Madanagopalan
(The Institute of mathematical Sciences, Chennai)
Sara Collins
(University of Regensburg)
