2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38822We report preliminary results for the I=2 pion scattering length a_0, calculated with chirally improved fermions. After chiral extrapolation our results are in good agreement with both, experimental and theoretical predictions.Poster presented at Lattice2004(spectrum)High Energy Physics - Latticetext