Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semileptonic $B_{q}\to D^{\ast}_{q}l\nu $ $(q=s, d, u)$ transitions in
  QCD   The form factors relevant to $B_{q}\to D^{\ast}_{q}(J^{P}=1^{-})\ell\nu$
$(q=s, d, u)$ decays are calculated in the framework of the three point QCD sum
rules approach. The heavy quark effective theory prediction of the form factors
are obtained. The total decay width and branching ratio for these decays are
also evaluated using the $q^2$ dependencies of these form factors.

1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom