Lattice QCD results for isospin I=1/2 Dπ scattering are presented. Utilizing a series of Nf=2+1 Wilson-Clover ensembles with pion masses of m_π ≈ 132, 208, 305 and $317$ MeV, various two-particle operators are constructed and the corresponding finite-volume spectra are determined. The S and P-wave scattering phase shifts are then extracted using the L\"{u}scher approach. A clear trend for the motion of the D₀^*(2300) pole is identified. With the physical pion mass configurations also included, this calculation constitutes the first lattice calculation in which the pion mass dependence of the D₀^*(2300) pole is investigated and the scattering lengths are extrapolated/interpolated to the physical pion mass in Dπ scattering.
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Yan et al. (2024) studied this question.
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