A study of inclusive Double-Pomeron-Exchange in p(p)over-bar -> pX(p)over-bar at root s=630 GeV

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Brandt A., Erhan S., Kuzucu A., Medinnis M., Ozdes N., Schlein P., ...More

EUROPEAN PHYSICAL JOURNAL C, vol.25, no.3, pp.361-377, 2002 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 3
  • Publication Date: 2002
  • Doi Number: 10.1007/s10052-002-1031-x
  • Page Numbers: pp.361-377


We report measurements of the inclusive reaction, p (p) over bar --> pX (p) over bar, 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, sigma(pp)(tot), 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.