From lattice QCD to predictions of scattering phase shifts at the physical point
May 16, 2022
The Hadron Spectrum Collaboration (HSC) presented new results on two of their ensembles for s-wave scattering phase shifts in the open-charm sector of QCD. For such ensembles we have made predictions that are based on the chiral Lagrangian that were published two years ago. In this talk we confront our phase shifts with those of HSC. A remarkably consistent picture emerges. In particular there is mounting evidence for the existence of a flavor-sextet state in the $D\pi$ and $D^*\pi$ channels, that show a striking quark-mass dependence.
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