Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QCD sum rule determination of the charm-quark mass   QCD sum rules involving mixed inverse moment integration kernels are used in
order to determine the running charm-quark mass in the $\bar{MS}$ scheme. Both
the high and the low energy expansion of the vector current correlator are
involved in this determination. The optimal integration kernel turns out to be
of the form $p(s) = 1 - (s_0/s)^2$, where $s_0$ is the onset of perturbative
QCD. This kernel enhances the contribution of the well known narrow resonances,
and reduces the impact of the data in the range $s \simeq 20 - 25 GeV^2$. This
feature leads to a substantial reduction in the sensitivity of the results to
changes in $s_0$, as well as to a much reduced impact of the experimental
uncertainties in the higher resonance region. The value obtained for the
charm-quark mass in the $\bar{MS}$ scheme at a scale of 3 GeV is $\bar{m}_c (3
GeV) = 987 \pm 9 MeV$, where the error includes all sources of uncertainties
added in quadrature.

2
The categories of this paper are: math
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
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The categories of this paper are: quant-ph
16
The categories of this paper are: stat