Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chiral Logarithms in $\Delta S=1$ Kaon Decay Amplitudes in General
  Effective Flavor Theories   We study the chiral logarithms in $\Delta S=1$ kaon decay amplitudes from new
flavor physics in beyond-standard-model theories. We systematically classify
the chiral structures of dimension-5, 6 and 7 effective QCD operators
constructed out of light-quark (up, down and strange) and gluon fields. Using
the standard chiral perturbation theory, we calculate the leading
chiral-logarithms associated with these operators. The result is useful for
lattice calculations of the QCD matrix elements in $K\to \pi\pi$ decay
necessary, for example, to understand the physical origin of the direct CP
violation parameter $\epsilon'$. As a concrete example, we consider the new
operators present in minimal left-right symmetric models.

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The categories of this paper are: comp-gas
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The categories of this paper are: supr-con
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: ao-sci
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: mtrl-th
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The categories of this paper are: math
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The categories of this paper are: physics
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The categories of this paper are: eess
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The categories of this paper are: hep-th