Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for Contact Interactions in Deep Inelastic e^+p->e^+X Scattering
  at HERA   In a search for signatures of physics processes beyond the Standard Model,
various eeqq vector contact-interaction hypotheses have been tested using the
high-Q^2, deep inelastic neutral-current e^+p scattering data collected with
the ZEUS detector at HERA. The data correspond to an integrated luminosity of
47.7pb-1 of e^+p interactions at 300GeV center-of-mass energy. No significant
evidence of a contact-interaction signal has been found. Limits at the 95%
confidence level are set on the contact-interaction amplitudes. The effective
mass scales Lambda corresponding to these limits range from 1.7TeV to 5TeV for
the contact-interaction scenarios considered.

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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
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The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
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The categories of this paper are: q-alg
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The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an