Speaker
Description
I present progress on the calculation of scalar, vector, and tensor form factors for the following meson decays: $B \rightarrow \pi$, $B_s \rightarrow K$, $D \rightarrow \pi$, and $D_s \rightarrow K$. The calculation uses the MILC $N_f = 2 + 1 + 1$ HISQ gluon field ensembles and HISQ valence quarks. We generate ensembles of correlator data with varying lattice spacings, as small as 0.044 fm. Some ensembles have a strange-to-light quark mass ratio of 5:1 and others use the physical light quark mass. The fully-relativistic, heavy-HISQ approach is used for the heavy quark, with simulation masses ranging from the charm to near the bottom. The heavy-HISQ approach provides nearly full coverage of the kinematic range. Preliminary correlator fits and next steps are discussed.
