Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mass spectra and decay constants of heavy-light axial quarkonia in the
  framework of Bethe-Salpeter equation   In this work we calculate the mass spectrum and decay constants of ground and
excited states of heavy-light $P$-wave mesons such as $1^{++}$ and $1^{+-}$,
with quark composition, $c\overline{u}, c\overline{s}, b\overline{u},
b\overline{s}$, and $b\overline{c}$ in the framework of a QCD motivated
Bethe-Salpeter equation (BSE) by making use of the exact treatment of the spin
structure $(\gamma_{\mu}\bigotimes\gamma_{\mu})$ in the interaction kernel, In
this $4\times 4$ BSE framework, the coupled Salpeter equations for
$Q\overline{q}$ are first solved for the confining part of interaction, and are
shown to decouple under heavy-quark approximation. Then the one-gluon-exchange
interaction is perturbatively incorporated, leading to their mass spectral
equations. The analytic forms of wave functions obtained from these equations
are then used for calculation of leptonic decay constants of ground and excited
states of $1^{++}$, and $1^{+-}$ as a test of these wave functions and the over
all framework.

34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con