Speaker
Description
We present progress towards extracting multi-hadron $D$ decay amplitudes, such as $D \to \pi \pi$, in a pilot study using three ensembles of stabilised Wilson fermions at the SU(3) flavour symmetric point, with $M_\pi = 410$ MeV. As the three ensembles differ only in the lattice spacing, with well matched physical volumes, it is possible to perform a continuum limit for finite-volume energies (and eventually weak-decay matrix elements) at fixed physical volume. The talk will summarise the work-flow and challenges of the ongoing calculation with a focus on results for the $a^2$-dependence and continuum limit of the two-to-two pseudoscalar S-wave scattering amplitude, determined via the GEVP+Lüscher approach in an exact distillation setup implemented in the Grid and Hadrons software libraries.
| Topical area | Quark and Lepton Flavor Physics |
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