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We report on progress applying the stochastic LapH method to estimateall-to-all propagators required in correlation functions of multi-hadronoperators relevant for pion-pion scattering. Large-volume results for $I=2$ and$I=1$ pion-pion scattering phase shifts with good statistical precision areobtained from an $N_{\rm f} = 2+1$ anisotropic Wilson clover ensemble with$m_{\pi} = 240\mathrm{MeV}$. We also present a preliminary determination of the$I=1$ pion-pion scattering phase shift and timelike pion form factor on anisotropic $N_{\rm f}=2+1$ flavour ensemble generated by the Coordinated LatticeSimulation (CLS) community effort.

Pion-pion scattering and the timelike pion form factor from $N_{\mathrm{f}} = 2+1$ lattice QCD simulations using the stochastic LapH method