arXiv subjects
Publications and source records attributed to Hartmut Wittig.
The status of lattice calculations for heavy quark systems is reviewed, focussing on weak matrix elements for leptonic and semi-leptonic decays of heavy mesons. After an assessment of the main systematic errors, results for the decay constants $f_D$ and $f_B$, the $B$ parameter describing $B - \bar{B}$ mixing, the Isgur-Wise function and the spectroscopy of heavy baryons are discussed.
We report on a set of simulations performed at several values of the lattice spacing on the Cray T3D at Edinburgh. Different methods to extract the lattice scale from the static quark potential are discussed.
We present decay constants from a quenched simulation using both propagating quarks and the static theory at $β=6.2$ on $24^3\times48$. The results using propagating quarks are used to test scaling laws predicted by the heavy quark symmetry.