Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-perturbative renormalization of the $\Delta S=2$ operator and the
  heavy-light axial current   We apply a recently introduced non-perturbative renormalization method to two
types of lattice operators: the $\Delta S=2$ four fermion operator and the
heavy-light static axial current, which are relevant for the physics of $K$ and
$B$ mesons respectively. The results of the non-perturbative calculations of
the renormalization constants are compared with the corresponding perturbative
ones.

36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol