M. Osipenko

Leading and higher twists in the proton polarized structure function g 1 p at large Bjorken x

A phenomenological parametrization of the proton polarized structure function

A phenomenological description of π−Δ++ photo- and electroproduction in nucleon resonance region

{g}_{1}^{p}{(x,Q}^{2})

Phenomenological model for describing pion pair production on a proton by virtual photons in the energy region of nucleon resonance excitation

is developed for

Lowest order QED radiative corrections to five-fold differential cross section of hadron leptoproduction

x\ensuremath{\gtrsim}0.02

Helicity components of the cross section for double charged-pion production by real photons on protons

using deep inelastic data up to

New extraction of αs(MZ) from proton DIS data

\ensuremath{\sim}50 (\mathrm{GeV}{/c)}^{2}

Pion-pair production on a proton by photons in the energy region of nucleon-resonance excitation

as well as available experimental results on both photo- and electroproduction of proton resonances. According to the new parametrization the generalized Drell-Hearn-Gerasimov sum rule is predicted to have a zero-crossing point at

Description of initial-and final-state-interaction effects for the reaction γp → π−Δ++ in the region of nucleon-resonance excitation

{Q}^{2}=0.16\ifmmode\pm\else\textpm\fi{}0.04 (\mathrm{GeV}{/c)}^{2}.

New possibilities for studying nucleon resonances in the production of π+π− pairs by polarized electrons on an unpolarized proton

Then, low-order polarized Nachtmann moments are estimated and their

Measurement of high lying nucleon resonances and search for a missing state in double charged pion electroproduction off the proton

{Q}^{2}