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The role of double helicity-flip amplitudes in small-angle elastic pp-scattering
S. M. Troshin, N. E. Tyurin
We asses a role of the double helicity-flip amplitudes in small-angle elastic pp-scattering and obtain a new unitary bound for the double helicity-flip amplitude F_2 in elastic pp-…
Note on spin carried by quarks
S. M. Troshin, N. E. Tyurin
We note that recent results on the role of final state interactions in deep inelastic scattering make more complicated an extraction of a nucleon spin fraction carried by quarks fr…
Unitarity at the LHC energies
S. M. Troshin, N. E. Tyurin
Phenomena related to the non-perturbative aspects of strong interactions at the LHC are discussed with emphasis on elastic and inelastic soft and hard diffraction processes. Predic…
Novel features in exclusive vector--meson production
M. A. Perfilov, S. M. Troshin, N. E. Tyurin
It is shown that the universality of the initial and final state interactions responsible for the transition between the on-- and off--mass shell states leads to the energy indepen…
Regularities of vector-meson electroproduction: transitory effects or early asymptotics?
S. M. Troshin, N. E. Tyurin
We discuss recent HERA results on vector--meson electroproduction gamma*p -> Vp and demonstrate that universality of the initial and final state interactions responsible for the tr…