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 $ $(q=s, d, u)$ Decays in QCD
  Sum Rules   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
as well as $1/m_{b}$ corrections to those form factors are obtained. A
comparison of the results for the ratio of form factors at zero recoil limit
and other values of $q^{2}$ with the predictions of the subleading Isgur-Wise
form factor application for $B\to D^{\ast}\ell\nu$ is presented. The total
decay width and branching ratio for these decays are also evaluated using the
$q^2$ dependencies of these form factors. The results are in good agreement
with the constituent quark meson model and existing experimental data. The
$q=s$ case can also be detected at LHC in the near future.

28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat