corrections to decay at zero recoil
J. Franzkowski1 - J.B. Tausk2
1 Institut für Physik,
Staudinger Weg 7, D-55099 Mainz, Germany
Fakultät für Physik, 2 Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany
Received: 10 December 1997 / Published online: 10 March 1998
Analytic formulae are presented for the two-loop perturbative QCD corrections to decay at the zero recoil point, which are required for the extraction of |Vbc| from measurements of exclusive decays. The results are in agreement with those in [8,9]. Some comments on the numerical evaluation of the diagrams involved are made.