Abstract.
We report measurements of the inclusive reaction, \(p \bar p \to p X \bar p\), 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-\({\cal P}\)omeron-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 \({\cal P}\)omeron-\({\cal P}\)omeron total cross section, \(\sigma^{tot}_{\cal PP}\) 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 \({\cal P}\)omeron flux factor. Based on our analysis, we present DPE cross section predictions, for unit (1 mb) \({\cal P}\)omeron-\({\cal P}\)omeron total cross section, at the Tevatron, LHC and the 920 GeV fixed-target experiment, HERA-B.
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Received: 6 February 2002 / Published online: 30 August 2002
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The UA8 Collaboration., Brandt et al., A. A study of inclusive Double-\({\cal P}\)omeron-Exchange in \(p \bar{p} \to p X \bar{p}\) at \(\sqrt{s} = 630\) GeV. Eur. Phys. J. C 25, 361–377 (2002). https://doi.org/10.1007/s10052-002-1031-x
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DOI: https://doi.org/10.1007/s10052-002-1031-x