  We propose a method to compute the Isgur-Wise form factors tau_1/2(1) and
tau_3/2(1) for the decay of B mesons into orbitally excited (P wave) D**
charmed mesons on the lattice in the static limit. We also present the result
of an exploratory numerical simulation which shows that the signal/noise ratio
allows for a more dedicated computation. We find tau_1/2(1)=0.38(5) and
tau_3/2(1)= 0.53(8), with yet unknown systematic errors. These preliminary
numbers agree fairly well with theoretical expectation.
