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A Study of Inclusive Double-Pomeron-Exchange in p pbar -> p X pbar at root s = 630 GeV

UA8 Collaboration·A. Brandt·J. B. Cheze·S. Erhan·A. Kuzucu·M. Medinnis·N. Ozdes·P. E. Schlein·M. T. Zeyrek·J. Zsembery·J. G. Zweizig
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Abstract

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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UA8 Collaboration, A. Brandt, J. B. Cheze, S. Erhan, A. Kuzucu, M. Medinnis, N. Ozdes, P. E. Schlein, M. T. Zeyrek, J. Zsembery, J. G. Zweizig. 2002-07-21. A Study of Inclusive Double-Pomeron-Exchange in p pbar -> p X pbar at root s = 630 GeV. https://doi.org/10.1007/s10052-002-1031-x

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