Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-perturbative determination of the axial current normalization
  constant in O(a) improved lattice QCD   A finite-size technique is employed to compute the normalization constant
$Z_A$ of the isovector axial current in lattice QCD. The calculation is carried
out in the quenched approximation for values of the bare gauge coupling $g_0$
ranging from 0 to 1. In the lattice action and the lattice expression for the
axial current we include the counterterms required for O(a) improvement, with
non-perturbatively determined coefficients. With little additional work the
normalization constant $Z_V$ of the improved isospin current is also obtained.

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The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
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The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
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The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
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The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex