4 papers
NLO QCD procedure of the SIDIS data analysis with respect to light quark polarized sea
A. N. Sissakian, O. Yu. Shevchenko, O. N. Ivanov
The semi-inclusive deep inelastic scattering (SIDIS) process is considered. It is proposed a theoretical procedure allowing the direct extraction from the SIDIS data of the first m…
Topological charge and topological susceptibility in connection with translation and gauge invariance
A. M. Kotzinian, O. Yu. Shevchenko, A. N. Sissakian
It is shown that the evaluation of the expectation value (EV) of topological charge density over -vacuum is reduced to investigation of the Chern-Simons term EV. An equation for…
Semi-inclusive polarized DIS in terms of Melin moments.I. Light sea quark polarized distribustions
A. N. Sissakian, O. Yu. Shevchenko, V. N. Samoilov
In connection with the semi-inclusive polarized DIS, it is proposed to consider the first Melin moments of the polarized quark and antiquark densities, instead of the respecti…
Topological Effects in Medium
A. N. Sissakian, O. Yu. Shevchenko, S. B. Solganik
Two closely related topological phenomena are studied at finite density and temperature. These are chiral anomaly and Chern--Simons term. It occurs that the chiral anomaly doesn't…