[en] The process of massive neutrino-antineutrino pair production by virtual polarized photon in the Weinberg-Salam model with mixing is studied. The probability of neutrino production by photons of various polarization is determined by magnetic field intensities less than critical one

[en] Radiation shift of quark mass in a constant chromomagnetic field under finite temperature and density is calculated. Threshold cases of weak and intensive chromomagnetic field are considered. It is shown that the finite density effect contribution to the quark mass shift in case of intensive field does not contain a supposed part, and its actual can exceed substantially the respective part of purely field contribution. 15 refs

[en] Probabilities of process of associative production of Higgs bosons with Z-boson by charged lepton in the field of plane electromagnetic wave of arbitrary intensity and in the constant crossed field are obtained. Behaviour of the process cross section as a function of energy of particles and external fields intensity at different values of Higgs boson's mass is investigated. It is shown that there is logarithmic growth of photo-process cross section in the range of superhigh energies up to the value, essentially exceeding the reaction e⁺ + e^- → Z + H cross section considered up todays as the most probable channel of Higgs bosons production

[en] The probabilities of the associated production of a Higgs boson with a Z boson by a charged lepton in the field of a plane electromagnetic wave of arbitrary intensity and in a constant crossed field are obtained. The behavior of the cross section of the process as a function of the particle energies and the external field intensity is investigated for various values of the Higgs boson mass. It is shown that there is a logarithmic increase in the photoproduction cross section at superhigh energies up to a value significantly exceeding the cross section of the reaction e⁺+e^-→Z+H, which is presently regarded as the most probable channel for the production of Higgs bosons

[en] Probability of radiation-induced decay of a massive dirac neutrino in a magnetized plasma was calculated. In the case of degenerated electron gas and superstrong magnetic field, important for astrophysical applications, the process probability is of identical value of magnitude but without consideration of the medium effect. It is shown that essential increase in decay rate compared with free process in degenerated electron gas, takes place

[en] It was found that at a critical value of magnetic field, at which the system of composite fermions becomes fully polarized over spin, temperature dependence of the electron spin polarization is a linear function in the field of low temperatures. It is shown that the dependence inclination is determined by the composite fermion Fermi energy, which permits measuring both Fermi energy and Zeeman splitting of the composite fermions. Essential enhancement of the composite fermion spin splitting in case of utter spin polarization of the system, which permits measuring the value of interaction between composite fermions, was revealed