Matching of soft and hard Pomerons
Sergey Bondarenko, Eugene Levin, C. J.Kenneth Tan · arXiv (Cornell University) · 2003
In this paper an attempt is made to match perturbative BFKL Pomeron with non-perturbative Pomeron originating from non-perturbative QCD phenomena such as QCD instantons and/or scale anomaly. The main idea centers on the fact that the non-perturbative Pomeron involves a large scale ($M_0 approx 2 GeV $), which is larger than the scale starting from which we can use perturbative QCD. One key result is that even for processes involving large hard scale (such as DIS) the low $x$ behavior is determined by an effective Pomeron with an intercept having an essential non-perturbative QCD contribution.