Kvazilastično izbijanje mezona iz nukleona. Razvoj i budućnost

The electroproduction of pions and kaons at the kinematics of quasi-elastic knockout is a powerful tool for investigation of mesonic cloud. A model of scalar qq¯ ( 3P0) fluctuation in the non-trivial QCD vacuum is used to calculate pion and kaon momentum distributions in the channels N→B+π, B = N, ∆, N∗ , N∗∗, and N→Y + K, Y=Λ, Σ0.Elektrotvorba piona i kaona u uvjetima kvazielastičnog izbijanja je moćna metoda za istraživanje elektronskog oblaka. Primijenili smo model skalarnih fluktuacija qq¯ ( 3P0) u netrivijalnom QCD vakuumu radi računanja raspodjela impulsa piona i kaona u kanalima N→B+π, B = N, ∆, N∗ , N∗∗, i N→Y + K, Y=Λ, Σ0

Microscopics of meson degrees of freedom in nucleons and mesons in nuclei - what can be seen in the process of quasielastic knockout of mesons by high-energy electrons

Developed earlier concept of quasielastic knock out of pions from nucleons by high-energy electrons is propounded as a tool for checking microscopical model ($^3P_0$ - fluctuation) for decay of N to different channels $\pi+B$ and Preparata model of nucleus structure.Comment: 6 pages, 5 figures, Talk given at 16 Baldin Symposium in June 200

Isoscalar short-range current in the deuteron induced by an intermediate dibaryon

A new model for short-range isoscalar currents in the deuteron and in the NN system is developed; it is based on the generation of an intermediate dibaryon which is the basic ingredient for the medium- and short-range NN interaction which was proposed recently by the present authors.This new current model can very well describe the experimental data for the three basic deuteron observables of isoscalar magnetic type, viz. the magnetic moment, the circular polarization of the photon in the $np\to d\gamma$ process at thermal neutron energies and the structure function B up to Q$^2$=60 fm$^{-2}$.Comment: LaTex, 22 pages with 8 figure