Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Combined Limits on First Generation Leptoquarks from the CDF and D0
  Experiments   We have combined recently published leptoquark results from the CDF and D0
Collaborations which yielded 95% CL lower limits on the first generation scalar
leptoquark mass of 213 GeV and 225 GeV, respectively, under assumption of 100%
branching fraction of the leptoquark decay into the eq channel. The combined
limit from the two experiments is 242 GeV. This is the most stringent limit on
the first generation scalar leptoquark mass to date.

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The categories of this paper are: gr-qc
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The categories of this paper are: plasm-ph
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The categories of this paper are: supr-con
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The categories of this paper are: hep-th
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The categories of this paper are: eess
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The categories of this paper are: cs
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The categories of this paper are: q-bio
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The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
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The categories of this paper are: q-alg
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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: patt-sol
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The categories of this paper are: hep-ph
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The categories of this paper are: cond-mat