Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semi-Leptonic Decays of $B$-Mesons   Form factors relevant for semi-leptonic $B\to D,\ D^*$ decays are obtained in
quenched lattice QCD. Tests of heavy-quark symmetry as well as determinations
of the Isgur-Wise function and $|V_{cb}|$ are presented.

27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom