Eur. Phys. J. C 25, 361-377 (2002)
A study of inclusive Double- omeron-Exchange in at GeVThe UA8 Collaboration A. Brandt1, S. Erhan1, A. Kuzucu1, M. Medinnis1, N. Ozdes1, P.E. Schlein1, M.T. Zeyrek1, J.G. Zweizig1, J.B. Cheze2 and J. Zsembery2
1 University of California, Los Angeles, CA 90024, USA
2 Centre d'Etudes Nucleaires-Saclay, 91191 Gif-sur-Yvette, France
(Received: 6 February 2002 / Published online: 30 August 2002 )
We report measurements of the inclusive reaction, , 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- 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 omeron omeron- omeron omeron omeron 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 omeron omeron omeron omeron flux factor. Based on our analysis, we present DPE cross section predictions, for unit (1 mb) omeron omeron omeron omeron omeron- omeron omeron omeron omeron omeron omeron total cross section, at the Tevatron, LHC and the 920 GeV fixed-target experiment, HERA-B.
© Società Italiana di Fisica, Springer-Verlag 2002