منابع مشابه
The Bfkl Pomeron: Can It Be Detected?
An estimate is derived for the absolute magnitude of BFKL pomeron exchange at t = 0. The analysis takes account of energy conservation and of the need realistically to model nonperturbative contributions to the BFKL integral from infrared regions. Experiment finds that there is little or no room for a significant BFKL term in soft processes, and this constrains its magnitude in hard and semihar...
متن کاملThe Bfkl Pomeron: Can It Be Detected? Damtp 96/47
The BFKL pomeron is swamped by the soft pomeron, at least at t = 0. Figure 1 shows data for the pp and ¯ pp total cross-sections. The curves 1 corrrespond to the exchange of the ρ, ω, f, a trajectories, whose contribution falls with increasing energy approximately as 1/ √ s, and a rising soft-pomeron-exchange term which rises as s 0.08. There is a clear disagreement between the two Tevatron dat...
متن کاملThe Pomeron beyond Bfkl
Conformally invariant reggeon interactions derived from t-channel unitarity are discussed and progress towards understanding the “physical Pomeron”, via massless quark reggeon interactions, is briefly outlined. Presented at the 5th International Workshop on Deep Inelastic Scattering and QCD, Chicago, Illinois, USA, April 14-18, 1997 Work supported by the U.S. Department of Energy, Division of H...
متن کاملBFKL Pomeron at Weak Coupling
We consider correlators of N = 4 super Yang Mills of the form A ∼〈O1O2O 1O 2〉, where the operatorsO1 andO2 are scalar primaries. In particular, we analyze this correlator in the planar limit and in a Lorentzian regime corresponding to high energy interactions in AdS. The planar amplitude is dominated by a Regge pole whose nature varies as a function of the ’t Hooft coupling g. At large g, the p...
متن کاملRunning coupling and BFKL pomeron
PACS numbers: 12.38 Cy One of the major issues in the high energy limit of QCD is the problem of interplay between the perturbative and non-perturbative regimes. The BFKL Pomeron in the leading logarithmic approximation [1] results in the equation which exhibits the characteristic diffusion pattern [2]. In the process with two, comparable hard scales (for example γ−γ, or forward jet/π0 in DIS) ...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1996
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(96)00509-3