Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-08-30
Phys.Atom.Nucl.58:1597-1601,1995; Yad.Fiz.58N9:1695-1700,1995
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, LaTex, 4 Figures (not encluded, avalable from the authors), JINR Preprint E2-94-348, Dubna,1994
Scientific paper
The spin effects at high energies and momenta transferred $|t|>1 GeV^2$ are analysed for quark-photon scattering. The energy independence of the ratio of spin-flip and spin-non-flip amplitudes in the same $\alpha_s$ order of QCD is obtained. It is shown that the contribution of the spin-dependent quark-pomeron vertex to the spin-flip amplitude is intensified by off-mass-shell effects in the quark loop. As a result, the magnitude of this amplitude can reach 20-30\% from a spin-non-flip one. The dependence of the cross-section on the form-factor and $\alpha_s^3$ spin-non-flip contributions are observed.
Goloskokov S. V.
Listopadov O. A.
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