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Improving the extraction of the semileptonic form factors from LQCD

Presenter: Benjamin Haas — Laboratoire de Physique Theorique

B.Haas, F.Mescia, D.Becirevic

We propose three strategies to improve the accuracy of the calculation of the hadronic matrix elements relevant to the semileptonic K-, D, B-decays. Illustration is provided for the D-decays form factors F+(q2) and F0(q2), extracted from the correlation functions computed with twisted boundary conditions on the configurations produced with Nf=2 O(a)-improved Wilson quark.