Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Inverse-Moment Chiral Sum Rules   A general class of inverse-moment sum rules was previously derived by the
authors in a chiral perturbation theory (ChPT) study at two-loop order of the
isospin and hypercharge vector-current propagators. Here, we address the
evaluation of the inverse-moment sum rules in terms of existing data and
theoretical constraints. Two kinds of sum rules are seen to occur, those which
contain as-yet undetermined ${\cal O}(q^6)$ counterterms and those free of such
quantities. We use the former to obtain phenomenological evaluations of two
${\cal O}(q^6)$ counterterms. Light is shed on the important but difficult
issue regarding contributions of higher orders in the ChPT expansion.

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The categories of this paper are: hep-th
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The categories of this paper are: alg-geom
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The categories of this paper are: solv-int
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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: math
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The categories of this paper are: physics
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The categories of this paper are: nlin
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The categories of this paper are: nucl-ex
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The categories of this paper are: cond-mat
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The categories of this paper are: chao-dyn
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The categories of this paper are: stat
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The categories of this paper are: q-bio
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The categories of this paper are: eess
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an