Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Impact of $\sigma(e^+e^-\to {hadrons})$ Measurements at Intermediate
  Energies on the Parameters of the Standard Model   We discuss the impact of precision measurements of $\sigma(e^+e^-\to
{hadrons})$ in the center-of-mass range between 3 and 12 GeV, including
improvements in the electronic widths of the narrow charmonium and bottonium
resonances, on the determination of parameters of the Standard Model. In
particular we discuss the impact of potential improvements on the extraction of
the strong coupling constant $\alpha_s$, on the evaluation of the hadronic
contributions to the electromagnetic coupling $\alpha(M_Z)$, and the
determination of the charm and bottom quark masses.

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The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
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The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin