# The 35th International Symposium on Lattice Field Theory

18-24 June 2017
Palacio de Congresos
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Andalucía II

# Toward pion-pion scattering amplitudes with controlled systematic errors

## Speakers

• Dr. John BULAVA

## Content

Progress is presented on an ongoing effort to determine pion-pion scattering amplitudes using multiple lattice spacings, pion masses, and physical volumes. The isovector elastic $p$-wave pion-pion scattering phase shift and the isovector timelike pion form factor are calculated using the stochastic LapH treatment of all-to-all quark propagators on a selection of $N_{\mathrm{f}} = 2+1$ CLS ensembles.