Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-10-19
Phys.Rev. D62 (2000) 014015
Physics
High Energy Physics
High Energy Physics - Phenomenology
In press Physical Review D, 2000, 35 pages, 1 table, 8 figures, Latex
Scientific paper
10.1103/PhysRevD.62.014015
Two mechanisms are examined for hard double pomeron exchange dijet production, the factorized model of Ingelman-Schlein and the nonfactorized model of lossless jet production which exhibits the Collins-Frankfurt-Strikman mechanism. Comparison between these two mechanisms are made of the total cross section, $E_T$-spectra, and mean rapidity spectra. For both mechanisms, several specific models are examined with the cuts of CDF, D\O and representative cuts of LHC. Distinct qualitative differences are predicted by the two mechanisms for the CDF $y_+$-spectra and for the $E_T$-spectra for all three experimental cuts. The preliminary CDF and D\O experimental data for this process are interpreted in terms of these two mechanisms. The $y_+$-spectra of the CDF data is suggestive of domination by the factorized Ingelman-Schlein mechanism, whereas the D\O data shows no greater preference for either mechanism. An inconsistency is found amongst all the theoretical models in attempting to explain the ratio of the cross sections given by the data from these two experiments.
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