Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Strong Coupling Constant from the Lattice 3-Gluon Vertex   We compute the QCD running coupling on the lattice as defined from the
3-gluon vertex. We present the results of an exploratory study at $\beta=6.0$
on a $16^4$ lattice, which show that for momenta larger than 2 \Gev, the
coupling runs according to the 2-loop asymptotic formula, allowing a precise
determination of the $\Lambda$ parameter. Our renormalization procedure
corresponds to a momentum subtraction scheme in the continuum and, most
remarkably, one does not need lattice perturbation theory to match the results
to MSbar scheme. We obtain $\alpha^{\MSB}(M_Z) = 0.115 \pm 0.003 \pm 0.008$.

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The categories of this paper are: adap-org
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The categories of this paper are: chem-ph
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The categories of this paper are: econ
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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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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: q-fin
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex