Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing Minicharged Particles with Tests of Coulomb's Law   Minicharged particles arise in many extensions of the Standard Model. Their
contribution to the vacuum polarization modifies Coulomb's law via the Uehling
potential. In this note we argue that tests for electromagnetic fifth forces
can therefore be a sensitive probe of minicharged particles. In the low mass
range <~micro-eV existing constraints from Cavendish type experiments provide
the best model-independent bounds on minicharged particles.

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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-lat
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: bayes-an
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The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: ao-sci