Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Perturbative Matching of the NRQCD Heavy-Light Axial Current   A one-loop matching calculation between Lattice NRQCD and full QCD for the
heavy-light axial current is described and the effects on f_B are discussed.

13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
18
The categories of this paper are: econ