MESON2026

Investigation of the $D\pi$ spectrum from a neural-network tuned heavy-quark action

26 Jun 2026, 18:05

20m

Medium lecture hall (A) (Auditorium Maximum)

Parallel Heavy Flavour (production, spectroscopy) Parallel session A4

Speaker

David Thoma (Technical University of Darmstadt)

Description

We present the spectrum of the $D\pi$ meson-meson scattering system on the 2+1-flavor lattice ensembles X451 and N451 produced by the CLS consortium with pion masses of approximately 287 MeV. The spectrum was produced for center-of-mass momenta up to $P^2=4$. The employed heavy-quark action was tuned non-perturbatively using a neural network and continuum charmonium ground-state masses. Meson correlation functions were produced using the stochastic distillation scheme. Investigating the $D\pi$ spectrum is an initial step for the extraction of scattering amplitudes to perform a full scattering analysis of the $D\pi$ system using L\"uscher's finite volume method.