A violation of the factorization theorem for "hard" inclusive production

This talk is a digest of Ref.[1](E.Gotsman,E. Levin and U. Maor: TAUP 2416/97, hep-ph/9705205,Phys. Lett. (in press)) where a new mechanism for hard inclusive production, which leads to a violation of the factorization theorem (FT), is suggested. Numericalestimates for the effect are given for high energy hadron (nucleus) scattering.Comment: Talk at DIS97,latex file, two eps files for picture

Gluon saturation and inclusive production at low transverse momenta

In this letter we suggest the generalization of $k_T$-factorization formula for inclusive gluon production for the dense-dense parton system scattering. It turnes out that the soft gluon production with transverse momentum $p_T$ is suppressed by additional Sudakov-like factor that depends on $p^2_T/Q^2_s$ ratio in a good agreement with the first numerical calculation in Colour Glass Condensate approach by J.P. Blaizot, T. Lappi and Y. Mehtar-Tan.Comment: 6 pp. 3 figures in eps file

Cost of Survival for Large Rapidity Gaps

In this talk, given at "RunII QCD and weak boson WS", we report on calculations of the survival probability of the large rapidity gap (LRG) processes and its energy behaviour.Comment: 4 pages, 3 figure

Higgs and Heavy Quarks Diffractive Production

In this talk, given at "RunII QCD and weak boson WS", we give the highest of reasonable estimates for the value of cross section of the double Pomeron Higgs meson production and suggest a new mechanism for heavy quark diffractive production which will dominate at the Tevatron energies.Comment: 4 pages, 2 figure

Nuclear modification factor for gluon jets

It is shown that the nuclear modification factor can be smaller that unity for jet production at small $x$ and at large transverse momentum without any violation of the factorization theorem and the initial state effects is able to explain the nuclear modification factor of the order of the one measured by ATLAS. In other word, initial state effects are able to describe the jet quenching for the gluon jet production.Comment: 6 pp. and 8 figures in .eps file

High energy scattering in QCD: dipole approach with Pomeron loops

This is the talk given at ``Gribov-75 Memorial Workshop on Quarks, Hadrons, and Strong Interactions", May 22-24, 2005, Budapest. Hungary. In this talk we discuss the BFKL Pomeron Calculus and its interrelation with thecolour dipole approach. The two key problems we consider are the probabilistic interpretation of the BFKL Pomeron Calculus and the possiblescenario for the asymptotic behaviour of the scattering amplitude at high energyin QCD.Comment: 16pages, 2 figures in eps file

Saturation 2005 (mini-review)

This talk was given at DIS'05 (Madison, April 27-May 2, 2005). It is a brief review of ups and downs of high density QCD during the past year.Comment: 4 pages and 1 figur