A Tale of Two Hard Pomerons

Abstract

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, DØand 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 DØexperimental 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 DØdata 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.

In press Physical Review D, 2000, 35 pages, 1 table, 8 figures, Latex

References in corpus (1)

• Hard scattering factorization and light cone hamiltonian approach to diffractive processes

Cited by in corpus (8)

• Observation of Exclusive Dijet Production at the Fermilab Tevatron p-pbar Collider
• Inclusive Higgs boson and dijet production via Double Pomeron exchange
• Exclusive Higgs and dijet production by double pomeron exchange. The CDF upper limits
• Diffractive Dijet Production
• Central inclusive dijets production by double pomeron exchange. Comparison with the CDF results
• Diffractive production of dijets by double Pomeron exchange processes
• Central Exclusive Di-jet Production at the Tevatron
• Extracting the Pomeron-Pomeron Cross Section from Diffractive Mass Spectra