arXiv subjects
Publications and source records attributed to APE Collaboration.
The light quark results from three different simulations are summarized. We get consistent results, within our statistics, between smeared and non smeared data. A comparison is performed with similar results from the UKQCD collaboration. All runs have been performed on two 6.4 GF APE computers \cite{tubo}.
The decay constants of the heavy-light pseudoscalar mesons are studied in a high statistics run using the Wilson action at $β=6.0$ and $β=6.2$, and the clover action at $β=6.0$. The systematics of $O(a)$ discretisation errors are discussed. Our best estimates of the decay constants are: $f_D$ = 218(9) MeV, $f_D/f_{Ds}$ = 1.11(1) and we obtain preliminary values for $f_B$.
Recent results for semi-leptonic decays of $D$ and $B$ mesons at $β=6.4$, using the Wilson action, and at $β=6.0$, using the Clover action, are reported.