Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Correlators of vector, tensor, and scalar composite vertices of order
  $O(\alpha_s^2\beta_0)$   We present analytical results for massless correlators of two vector, tensor,
and scalar composite vertices with the Bjorken fractions $x$ and $y$ of order
$\alpha_s^2 \beta_0$ of QCD. The structure of these correlators
$\Pi^\text{V,T,S}(x,y; p^2)$ and properties of its main elements are discussed
in detail. Special attention is paid to verifying the results and comparing
them with known particular cases. We apply the correlators to evaluate
radiative corrections to the distribution amplitudes of light mesons within the
QCD sum rules.

32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg