Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quark-gluon vertex from the Landau gauge Curci-Ferrari model   We investigate the quark-gluon three-point correlation function within a
one-loop computation performed in the Curci-Ferrari massive extension of the
Faddeev-Popov gauge-fixed action. The mass term is used as a minimal way for
taking into account the influence of the Gribov ambiguity. Our results, with
renormalization-group improvement, are compared with lattice data. We show that
the comparison is in general very satisfactory for the functions which are
compatible with chiral symmetry, except for one. We argue that this may be due
to large systematic errors {when extracting this function from} lattice
simulations. The quantities which break chiral symmetry are more sensitive to
the details of the renormalization scheme. We however manage to reproduce some
of them with good precision. The chosen parameters allow to simultaneously fit
the quark mass function coming from the quark propagator with a reasonably
agreement.

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The categories of this paper are: hep-ex
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys
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The categories of this paper are: physics
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The categories of this paper are: math
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The categories of this paper are: astro-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
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The categories of this paper are: funct-an