Can perturbative QCD predict a substantial part of diffractive LHC / SSC physics ?
نویسندگان
چکیده
We examine a model of hadronic diffractive scattering which interpolates between perturbative QCD and non-perturbative fits. We restrict the perturbative QCD re-summation to the large transverse momentum region, and use a simple Regge-pole parametrization in the infrared region. This picture allows us to account for existing data, and to estimate the size of the perturbative contribution to future diffractive measurements. At LHC and SSC energies, we find that a cutoff BFKL equation can lead to a measurable perturbative component in traditionally soft processes. In particular , we show that the total pp cross section could become as large as 228 mb (160 mb) and the ρ parameter as large as 0.23 (0.24) at the SSC (LHC).
منابع مشابه
Perturbative Qcd Corrections to the Soft Pomeron ∗
We study the interface between soft and hard QCD at high energy and small momentum transfer. At LHC and SSC energies, we find that a cutoff BFKL equation leads one to expect a measurable perturbative component in traditionally soft processes. We show that the total cross section could become as large as 175 mb (122 mb) and the ρ parameter 0.40 (0.25) at the SSC (LHC).
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