Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Study of Inclusive Double-Pomeron-Exchange in p pbar -> p X pbar at
  root s = 630 GeV   We report measurements of the inclusive reaction, p pbar -> p X pbar, in
events where either or both the beam-like final-state baryons were detected in
Roman-pot spectrometers and the central system was detected in the UA2
calorimeter. A Double-Pomeron-Exchange (DPE) analysis of these data and single
diffractive data from the same experiment demonstrates that, for central masses
of a few GeV, the extracted Pomeron-Pomeron total cross section exhibits an
enhancement which exceeds factorization expectations by an order-of-magnitude.
This may be a signature for glueball production. The enhancement is shown to be
independent of uncertainties connected with possible non-universality of the
Pomeron flux factor. Based on our analysis, we present DPE cross section
predictions, for unit (1 mb) Pomeron-Pomeron total cross section, at the
Tevatron, LHC and the 920 GeV fixed-target experiment, HERA-B.

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The categories of this paper are: chem-ph
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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: cmp-lg
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: math
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The categories of this paper are: atom-ph
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The categories of this paper are: physics
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The categories of this paper are: nlin
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The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol